Lync web app service error

lync web app service error

No connectivity with the Lync Web App. Affected Web browser clients cannot use Web Conferencing modality. Server Machine FQDN: , Port. There Was An Error While Joining The Conference / An Error Occurred While The article applies to Lync Server 2010 and Lync Web App. Server Type: External-WebApp-Edge [HTTP side error:The underlying connection was closed: Could not establish trust relationship for the SSL/TLS. lync web app service error

Final, sorry: Lync web app service error

Flylink dc database error
Lync web app service error
500 INTERNAL SERVER ERROR WORDPRESS INSTALLATION

Lync web app service error - suggest

In a recent support case we were working on an issue where sometimes the users couldn’t use the Lync Web App.

The troubleshooting started in the Event Viewer > Lync Server, we notice that we had a few errors:

Log Name: Lync Server
Source: LS Data MCU
Date: 01/03/2017 15:00:43
Event ID: 41029
Task Category: (1018)
Level: Error
Keywords: Classic
User: N/A
Computer: lync2013fe01.gears.lab
Description:
No connectivity with the Lync Web App. Affected Web browser clients cannot use Web Conferencing modality.

Server Machine FQDN: lync2013fe01.gears.lab, Port:8061
Server Type: External-WebApp-Edge [HTTP side error:Unable to connect to the remote server]
If the problem persists this event will be logged again after 20 minutes
Cause: Service may be unavailable or Network connectivity may have been compromised.

Another error was mentioning an issue HTTP connectivity:

Log Name: Lync Server
Source: LS User Services
Date: 01/03/2017 15:04:57
Event ID: 30988
Task Category: (1006)
Level: Error
Keywords: Classic
User: N/A
Computer: lync2013fe01.gears.lab
Description:
Sending HTTP request failed. Server functionality will be affected if messages are failing consistently.

Sending the message to https://lync2013fe01.gears.lab:444/LiveServer/Replication failed. IP Address is 172.20.13.21. Error code is 2EFD. Content-Type is application/replication+xml. Http Error Code is 0.

Cause: Network connectivity issues or an incorrectly configured certificate on the destination server. Check the eventlog description for more information.
Resolution:
Check the destination server to see that it is listening on the same URI and it has certificate configured for MTLS. Other reasons might be network connectivity issues between the two servers.

Both events showed that the server could not establish a connection himself.

Then we check if the server was listening on that port:

netstat -anp TCP
netstat – Info

Get-NetTCPConnection -State Listen -LocalPort 80,8080,443,444,4443,8061

SOLUTION: Lync 2010 Web Services Error HTTP 500. Cannot Download Offline Address Book, Cannot Expand Groups…

Applies to Lync Server 2010 on Windows 2012 R2

Problem:

You installed Lync 2010 on Windows 2012 R2. Clients cannot download Lync 2010 Address Offline  Book. Also cannotexpand Groups in Lync Client. Actually all other Lync Web services like Certificate Provisioning do not work.

If you try to download OAB file using browser you got the following error:

HTTP Error 500.0 – Internal Server Error

Also the following errors loggged in IIS Logs (C:\inetpub\logs\LogFiles..)

… 10.10.xx.yy GET /abs/handler/F-16af.lsabs – 443 – 10.86.82.43 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 0
… 10.10.xx.yy GET /abs/handler/F-16ae.lsabs – 443 – 10.86.82.43 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 0
… 10.10.xx.yy POST /groupexpansion/service.svc/mex – 443 – 10.86.81.15 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 23
… 10.10.xx.yy POST /RgsClients/AgentService.svc/mex – 443 – 10.86.80.169 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 4
… 10.10.xx.yy GET /abs/handler/F-16b2.lsabs – 443 – 10.86.81.253 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 26
… 10.10.xx.yy POST /locationinformation/liservice.svc/mex – 443 – 10.86.80.169 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 12
… 10.10.xx.yy GET /abs/handler/F-16af.lsabs – 443 – 10.86.81.16 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 12
… 10.10.xx.yy POST /groupexpansion/service.svc/mex – 443 – 10.86.80.205 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 17
… 10.10.xx.yy POST /CertProv/CertProvisioningService.svc/mex – 443 – 10.106.42.100 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 21

Cause:

If Lync 2010 is installed on Windows 2012 R2 operating system then by default Lync 2010 Web Services Application pools run on .Net FrameWork 4.0. But Lync 2010 Application Pools must be run on .Net Version 2

Resolution:

Apply the steps in KB 2777747

404.17 – Not Found error message when you try to connect to a Lync Server 2010 web service https://support.microsoft.com/en-us/kb/2777747

  1. Click the Windows logo key to access the Start screen, click Server Manager, and then click OK.
  2. In Server Manager, click Tools, and then click Internet Information Services (IIS) Manager.
  3. Expand localhost, and then click Application Pools.
  4. Right-click CsExtAuthPool, and then click Advanced Settings. Go to Gerneral\.Net CLR Version
  5. Click .NET Framework Version, click v2.0, and then click OK.
  6. Repeat steps 4 and 5 for each application pool that has a name that begins with “Cs.”
  7. Click the Windows logo key to access the Start screen, type cmd, and then click cmd.
  8. Type the following command into the Windows Command Prompt window,
    iisreset /restartand then press Enter
  9. Close the Command Prompt window.

All Lync Web Serviceses including OAB downloads will function correctly immediately. You need to wait for sometime Lync Client OAB downloads.

More Info:

Supportability is available for Lync Server 2010 and Lync 2010 clients on Windows Server 2012, Windows Server 2012 R2, and Windows 8 client operating systems
https://support.microsoft.com/en-us/kb/2777359

 

 

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This entry was posted in Lync 2010 and tagged HTTP 500, Internal Server Error, Lync 2010, Offline Address Book, Windows 2012 R2. Bookmark the permalink.

ft -AutoSize
https://docs.microsoft.com/powershell/module/webadminstration/get-webbinding

netsh http show sslcert
https://docs.microsoft.com/windows/desktop/Http/netsh-commands-for-http

After checking other parameters available in netsh we found that the non-working had the loopback address configured in the HTTP IP Listen List:

netsh http show iplisten

While the working server we didn’t had any IP address configured:

This was causing the wrong binding, to fix it we only had to remove the loopback address from the list:

netsh http delete iplisten 127.0.0.1

After this change the server started to listen in the correct IP address/ports:

netstat -anp TCP

We also confirmed in the Event Viewer that the Lync Web App was starting:

 

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Office Web Apps and Skype for Business Integration

This article addresses the deployment of a single Office Web Apps 2013 Server and subsequent integration with an existing Skype for Business (SfB) Server 2015 environment.  The environment and example steps outlined here are a continuation of a series of related articles covering the installation and configuration of a Standard Edition topology of Skype for Business Server 2015.

When testing various Skype for Business meeting modalities in the last article a specific feature was briefly mentioned which was not yet available: the ability to use the Present PowerPoint Files option from the Present menu.  This is because the deployed environment does not yet include an Office Web Apps Server which is required to support that functionality.  This server is not a SfB role but is actually part of the Office server family and is leveraged by Skype for Business as well as other Microsoft server products like Exchange and SharePoint.

It is important to be aware that once deployed this feature may still not function on any Skype for Business clients on workstations which are not joined to the same domain as the SfB deployment.  In these scenarios either server certificate revocation checking needs to be disabled on the workstations or the RootCA certificate configuration needs to be modified.  These concepts are addressed in this TechNet article.  (For this environment the later RootCA approach has already been addressed in the prerequisite statements defined in the first deployment article of the series.)

Note that the Office Web Apps (OWA) Server is also sometimes referred to as the “WAC Server” which is a carryover from the product’s pre-release name of Web App Companion Server.  Also be aware that this server role is completely separate from the Exchange Server web application entitled Outlook Web App which provides a browser-embedded client experience for access to Exchange email similar to the Outlook desktop client.

Current State

In the example Skype for Business environment this PowerPoint sharing functionality has not yet been introduced.  The steps in this first section show how to confirm that the feature is not yet available.

View Topology

    • On the Skype for Business Front End server open the Skype for Business Server 2015 Topology Builder and select Download Topology from existing deployment.
    • Expand the default site (e.g. Lab), the Skype for Business Sever 2015 object, then Standard Edition Front End Servers, and finally highlight the pool FQDN (e.g. fe.jdskype.net).
    • Scroll the right-hand window down to the Associations section to see that the Office Web Apps Server value should not yet be configured.

image

Test Missing Feature

  • Sign into a Skype for Business client and start a meeting using the Meet Now menu item.
  • From the Present button select the Present PowerPoint Files menu option.  Select an existing PowerPoint file on the computer or network to share with the meeting.
  • While the client will appear to attempt uploading the selected file the process should actually fail after a few seconds with the following error.

image 

  • On the SfB Front End server open the Event Viewer and browse to Applications and Services Logs > Lync Server.
  • Search for the following log entry recorded with Error ID 41033.

Log Name:      Lync Server
Source:        LS Data MCU
Event ID:      41033
Level:         Error
Computer:      FE.jdskype.net

Office Web Apps Server (WAC) discovery failed, PowerPoint content is disabled.

Attempted Office Web Apps Server discovery Url:
Received error message: Invalid Uri syntax for WAC configuration
The number of retries: 1, since 8/27/2015 4:44:40 PM.
Cause: Office Web Apps Server may be unavailable or network connectivity may have been compromised.

Resolution:
Check HTTPS connectivity from this box to the Office Web Apps Server deployment using the discovery Url.

At this point it is evident that the environment is missing the required server role and configuration in order to support this feature.  The remainder of this article details the installation and integration steps required to add the desired functionality.

Deployment

The remaining sections in this article are outlined in this diagram to show the general order of steps and visually represent which steps are performed on which platform.  For example orange indicates configuration steps completed on the OWA server where the blue is for steps performed on the SfB server.

image

As the Office Web Apps Server can not be collocated on any of the existing servers in the environment like a Domain Controller, Exchange Server, or Skype for Business Server then a separate, dedicated server needs to be deployed to host this role.

A new Windows Server 2012 R2 virtual machine was deployed and joined to the existing jdskype.net domain.  Alternatively both Windows Server 2008 R2 and 2012 are also supported server operating systems for this role if desired.  (The following steps are for Server 2012 R2, if a different server version is used then check this TechNet article for a list of different required components.)

Install Prerequisites

  • Run Windows Update on the new server and apply any pending or recommended update packages prior to installing any Office Web Apps Server components.
  • Download the latest Office Web Apps Server installation media.  For MSDN subscribers as of the publishing of this article the most recent version is the Office Web Apps Server 2013 with Service Pack 1 (x64) ISO package.

Windows Server 2012 R2 will require that the .NET Framework version is upgraded to at least 4.5.2.  This can be accomplished  in one of two ways:

  • The simplest method is to launch Windows Update on the server and then review the Optional updates.  If available, select the Microsoft .NET Framework 4.5.2 for Windows…(KB293450) package and then click Install.  Restart the server when the update is complete.

image

  • Alternatively if this package is not listed in Windows Update then download and install the NDP452-KB2901954-Web.exe hotfix from Microsoft Download Center.  Restart the server when the update is complete.
  • Launch PowerShell as an administrator and enter the following command string to install all required Windows Features and then restart the server when completed.

Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,InkandHandwritingServices,NET-Framework-Features,NET-Framework-Core,NET-HTTP-Activation,NET-Non-HTTP-Activ,NET-WCF-HTTP-Activation45

image

Install Server

  • Mount the Office Web Apps Server 2013 installation media and run setup.exe.
  • Either retain the default file location of C:\Program Files\Microsoft Office Web Apps or change the path to the desired application volume, and then select Install Now.

If the installation is successful  then the follow message should appear.

image 

Update Server

As outlined in this TechNet article Office Web Apps Server cannot be upgraded without losing some of its configuration data.  Thus it is recommended to disable any automatic updates on this server and configure them to require manual approval.  If a future Office Web Apps update is automatically installed via Windows Update it will most likely result in a broken server and PowerPoint presentations will no longer function for any SfB clients in the environment.

For this reason it is recommended to apply any newer Office Web Apps Server updates prior to the initial configuration.  When applying future updates to a functional, configured server make sure to follow the guidance in the TechNet article referenced in the previous paragraph which explains how to remove and recreate the server farm each time and update is applied.

The following historical table lists the more recent public updates for Office Web Apps. As these are service packs and cumulative updates then only the most recent update (highlighted in green) needs to be applied.  (A complete list of updates including minor hotfixes and security patches see this blog article.)

 

If for some reason the Office Web Apps server was installed with the RTM installation media then the SP1 update must be applied before installing the latest update.  As the SP1 media was used for this specific server installation then only the most recent July 2015 cumulative update needs to be installed on the server.

  • Download and install the latest Update for Microsoft Office Web Apps Server 2013.  Restart the server when the installation is complete.

image

Install Language Packs

This step is optional and is only applicable if additional language support has also been configured on the Skype for Business Server.  If so then this package adds support for other languages to shared PowerPoint presentations.

image

Configuration

While the previous steps where basically just collecting and installing downloaded software this section will cover the configuration of the Office Web Apps Server.  Once this is completed the next section will address configuration on the Skype for Business side to complete the integration.

Note that this article deals with an internal-only lab environment and thus any External configuration is not covered.  In a potential future article when a Skype for Business Edge Server is introduced and thus a reverse proxy solution is needed then this configuration will be revisited to provide for external access.  As this server handles only HTTPS (TCP 443) requests then it is not a role that is handled by the Edge Server, but must be published through a supported reverse proxy model in the same way that the SfB Front End server web services will be.

Create Certificate

Before creating the new Office Web Apps farm a new server certificate will need to be requested and issued to the server to support HTTPS connections required by the Skype for Business clients and servers.  For environments with an AD-integrated Certificate Authority (CA) this process can easily be performed from the domain-joined OWA server using the steps shown below.  In environments leveraging a third-party CA for certificates then an offline request may need to be issued, which is covered in this older article.

  • On the OWA Server launch Internet Information Services (IIS) Manager (inetmgr.exe) and in the Connections window pane highlight the server object.

image

  • In the main window under the IIS section open the Server Certificates feature under the IIS section.

image

  • From the Action pane select Create Domain Certificate which will launch a wizard to request, issue, and import a new server certificate all in one pass.

image

  • Enter the server’s Fully Qualified Domain Name in the Common Name field (e.g. owa.jdskype.net).
  • Populate the remaining fields with any applicable information and then click Next.

image

  • On the Online Certification Authority window click Select to bring up a list of AD-integrated certificate authorities and then select the desired CA.  In this environment a single Enterprise Root CA is available (e.g. jdskype-RootCA).

image

  • Enter a Friendly Name for the new certificate (e.g. OWA Server Cert) and click Finish.

image

This previous step is critical as the next section will utilize the certificate’s Friendly Name name to assign it to a new Office Web Apps farm.  Because Widows Server does not prevent multiple certificates on the same server from having the same friendly name this could cause problems with the OWA server configuration.  Make sure that the Friendly Name entered above is unique from any other server certificates which might already be assigned to the server.  Note that the Friendly Name field on a certificate is not actually part of the signed information and can be changed anytime, so there is no need to request a new certificate if this were to occur.  Simply rename one of the conflicting certificates to resolve this.

Completing the previous step will process the request, immediately issue it to the online CA, and then import the returned, signed certificate into the local server.  The new certificate should be listed under the Server Certificates panel as shown below.

image

Create New Server Farm

There is no user interface tool for managing the Office Web Apps server and thus all configuration is performed using the PowerShell cmdlets which were automatically added during the earlier server installation.

  • On the OWA server open Windows PowerShell as an administrator and issue the following New-OfficeWebAppsFarm cmdlet.  The InternalUrlparameter should use the server’s FQDN and the CertificateNamevalue must match exactly to the Friendly Name given to the certificate created in the previous section.

New-OfficeWebAppsFarm -InternalUrl "https://owa.jdskype.net" -CertificateName "OWA Server Cert"

image

Note that by assigning a certificate during the creation of the server farm that unencrypted HTTP access is not allowed and only encrypted HTTPS access is supported.  This is the correct setup for integration with Skype for Business Server.

  • To validate the configuration and test access to the Office Web Apps Server open Internet Explorer locally on the OWA server and connect to the Internal URL with the suffix of /hosting/discovery as shown below. If successful then some XML code should be displayed in the browser.

https://owa.jdskype.net/hosting/discovery

image

.

  • Repeat the same test from another server or workstation in the environment to validate network access to the same service.
  • Collapse all of the XML tags to easily locate the PowerPoint app name.  While this server includes support for other Office applications this is the section that Skype for Business Server will be leveraging for sharing presentation files.

image

Integration

Now that the Office Web Apps server appears to be functional then the final configuration step is to integrate it with Skype for Business Server 2015.

Update Topology

The configuration in SfB is as simple as telling the server where to find the newly deployed Office Web Apps server; there is no additional configuration required.

  • On the Skype for Business Front End server open Topology Builder and select Download Topology from existing deployment.
  • Expand the default site (e.g. Lab), the Skype for Business Sever 2015 object, then Standard Edition Front End Servers, and finally highlight the pool FQDN.
  • Edit the pool properties and under the General section enable the Associate pool with an Office Web Apps Server parameter.
  • Click New and then enter the Office Web Apps Server FQDN (e.g. owa.jdskype.net).  Notice that the Office Web Apps Server discovery URL will automatically be populated with the the same value that was used to test the server previously.

image

If the OWA server is not deployed in an internally-routable network to the SfB Front End server then click the checkbox in this window.  In this environment the servers are all located in the same LAN so it is left unchecked.

  • Click OK to save the changes and then verify in the main window that the new entry is associated to the pool.

image

  • From the Action menu select Topology > Publish to complete the changes and publish the new configuration to the Skype for Business environment.

image

  • When the publishing process completes successfully then click Finish and then close Topology Builder.

Validate Integration

Before testing the integration the SfB server log can be checked to make sure that the OWA server has been discovered and enabled in the environment.

  • On the SfB Front End server open Event Viewer and browse to Applications and Services Logs > Lync Server.
  • Filter the current log for the Event source of LS Data MCU to simplify locating the desired log entries on the server.

image

Looking at the most recent log entries the following two Information events should be logged shortly after publishing the changes to the SfB topology.

  • First an entry for Event ID 41032 should be recorded indicating that the SfB Front End server has successfully discovered then OWA server.

Log Name:      Lync Server
Source:        LS Data MCU
Event ID:      41032
Level:         Information
Computer:      FE.jdskype.net

Web Conferencing Server Office Web Apps Server (WAC) discovery has succeeded

Office Web Apps Server internal presenter page: _https://owa.jdskype.net/m/Presenter.aspx?a=0&e=true&
Office Web Apps Server internal attendee page: _https://owa.jdskype.net/m/ParticipantFrame.aspx?a=0&e=true&
Office Web Apps Server external presenter page: _
Office Web Apps Server external attendee page: _

  • Immediately following that should be an entry with Event ID 41034 which indicates that PowerPoint content sharing is now enabled.

Log Name:      Lync Server
Source:        LS Data MCU
Event ID:      41034
Level:         Information
Computer:      FE.jdskype.net

Web Conferencing Server has successfully discovered Office Web Apps Server, PowerPoint content is enabled

In the event that the deployment was not successful then a different error message may appear.  The most common is Event ID 41033 which reports a problem with the discovery process.

Log Name:      Lync Server
Source:        LS Data MCU
Event ID:      41033

Office Web Apps Server (WAC) discovery failed, PowerPoint content is disabled.

Attempted Office Web Apps Server discovery Url:
Received error message: Invalid Uri syntax for WAC configuration
The number of retries: 1, since 2/25/2016 2:17:40 PM.
Cause: Office Web Apps Server may be unavailable or network connectivity may have been compromised.

Check HTTPS connectivity from this box to the Office Web Apps Server deployment using the discovery Url.

Depending on the data returned in the event above this could point to a couple different possibilities.

  • In this example notice that there is no URL actually displayed after the “Attempted Office Web Apps Server discovery URL:” text.  This might happen if the Office Web Apps Server FQDN was defined manually under the Shared Components section of the topology but not actually associated to any Front End Servers.
  • If a URL is listed after the same text above then verify that it is correct and there are no mistakes in the server FQDN.  Also make sure that the URL is resolvable and reachable from the Front End server as shown in the previous section.

Test Functionality

With the topology published the final step is to repeat the same test that was performed at the onset of this article.

  • Sign into a Skype for Business client and start a meeting using the Meet Now menu item.

If this client was already signed-in during the deployment then make sure to sign out and back in to receive the latest SfB provisioning settings from the server which reflect the changes.

  • From the Present button select the Present PowerPoint Files menu option.  Select the same PowerPoint file that was tested earlier and failed.
  • This time the shared PowerPoint file should be successfully uploaded and shared with all clients connected to the meeting.

image

This concludes the deployment of a single Office Web Apps Server into the environment.  More Skype for Business 2015 Server deployment articles like this one can always be found in this updated list, which will include an upcoming article on Exchange Server integration.

About Jeff Schertz
Site Administrator

If you’re having trouble signing in to Lync Online, you may be able to resolve the issue yourself before contacting technical support.

What do you want to do?

Troubleshoot common sign-in errors

The following table describes common sign-in issues, along with more information and suggestion action.

Issue

Suggested Resolution

I forgot my password.

Contact your organization’s technical support team and ask them to reset your password.

When I try to sign in, I get an error message containing the following phrase: Sign-in address not found

  1. First, confirm that your user ID and password are correct.

  2. Next, check the format of your user ID, which should look like the following example: [email protected]. This may be different from the format you use to sign in to your organization’s network.

  3. If your user ID and password are correct, and you’re sure you’ve entered them correctly, then contact your technical support team. For details, see the following section, Contact technical support.

When I try to sign in, I get an error message containing the following phrase: the authentication service may be incompatible with this version of the program

First, confirm that your user ID and password are correct. If they are, and you’re sure you’ve entered them correctly, then you may need to update your copy of Lync Online to the latest version.

To do this, follow these steps:

  1. Uninstall both Lync and the Microsoft Online Services Sign-in Assistant.

  2. Reinstall both programs from the Microsoft 365 Portal at http://portal.office.com/.

If you still cannot sign in, contact your technical support team. For details, see the following section, Contact technical support.

What is the difference between my sign-in address and my user ID?

In most cases your user ID and sign-in address are the same, so you can enter the same information in both boxes.
If you still cannot sign in, contact your organization’s technical support team. In some organizations, these two values are different.

Lync keeps asking me to sign in after I’ve already signed in

When you first sign in to Lync, you may be asked to enter your sign-in credentials up to three times as Lync connects to your calendar and other online services.

Important: Even if the issue is resolved, notify your organization’s technical support team in order to prevent it from happening again.

When I try to sign in, I get an error message containing the following phrase: Cannot sign in because the server is temporarily unavailable.

You may have an out-of-date version of the Microsoft Online Services Sign-in Assistant. Uninstall the Microsoft Online Services Sign-in Assistant, and then reinstall it from the Microsoft 365 portal at http://portal.office.com/.

If you still cannot sign in, contact your technical support team. For details, see the following section, Contact technical support.

I get this error message when I try to sign in:

Problem acquiring a personal certificate that is required to sign in

If your sign address has recently changed, you may need to delete your old sign-in data. Run the automated Fix it wizard in Microsoft Knowledge Base article 2698626.

I get this error message when I try to sign in:

User name, password, or domain appears to be incorrect

The user’s sign address may have changed recently. Ask the user to reinstall the Online Services Sign-in Assistant from the Microsoft 365 Portal at http://portal.office.com/, and then try signing in again

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Contact technical support

When you contact your organization’s technical support team about your log-in issue, provide them with the following information:

  1. A detailed description of the steps that led to the error, and the exact text of the error message.

  2. A link to the following additional information for administrators: Troubleshoot problems with Skype for Business Online.

Gather error logs if requested to do so by technical support

An error log is a record of what happens when a computer encounters a problem. Your technical support team may request that you provide them with error logs to help analyze sign-in or other problems in Microsoft Lync 2010 or Windows.

You may be asked to provide one or more of the following types of logs:

  • Lync log files or Windows Event Logs. For details see Set Logging options.

  • Microsoft Online Services Diagnostic and Logging (MOSDAL) Support Toolkit. For details, see Using the MOSDAL Support Toolkit.

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Troubleshooting Office Online Server 2016 OR Office Web Apps (WAC) Server for Skype for Business Server 2015 OR Lync Server 2013

 

The Office Online Server 2016 is next version of Office Web Apps Server 2013. Both Office Online Server 2016 and Office Web Apps Server 2013 can be used in Skype for Business Server 2015 or Lync Server 2013 on premise environment for PowerPoint sharing and OneNote integration in online meetings. The Office Online Server 2016 or Office Web Apps Server 2013 usually referred with acronym WAC.

Please note that both Office Online Server 2016 and Office Web Apps Server 2013 are mutually exclusive in Skype for Business Server 2015 or Lync Server 2013 environment – meaning only one type of server can be active with the environment. One cannot connect both Office Online Server 2016 farm OR Office Web Apps Server 2013 farm to same front end pool of Skype for Business Server 2015 or Lync Server 2013.

During the deployment testing as well as post deployment, end users get an error when he/she try to upload a PowerPoint or access OneNote in Skype for Business Server 2015 or Lync Server 2013 online meeting. The error states – “A network error occurred” and PowerPoint slides cannot uploaded in the online meeting OR cannot be presented in the online meeting.

Usually, this “network error” points to WAC farm not running correctly, that will directly impact the PowerPoint Sharing or OneNote in the meeting.

To troubleshoot the issue, one must login to WAC server with administrative privileges and start Windows PowerShell command prompt as follows:

Right mouse click allow to start it as an administrator as shown below

Make sure that you start it as an administrator.

Once started, enter “Import-Module OfficeWebApps” and hit enter

The above command will enable all Office Web Apps related PowerShell commands. The PowerShell commands are:

The “get-Office* commands provides information on appropriate configuration.

The “New-Office*” commands allow to create appropriate configuration.

The “Remove-Office*” commands allow to remove or delete the configuration.

The “Repair-OfficeWebAppsFarm” command allow you to revert or repair the farm configuration. Please note that the Repair-OfficeWebAppsFarm cmdlet removes all servers flagged as unhealthy from a WAC farm.

The “Set-Office*” commands allow you to set specific fields in the configuration.

The details of all available PowerShell commands can be found at Office Online Server PowerShell OR Office Web Apps Server PowerShell respectively. Please note that Office Online server PowerShell is an extended set from Office Web Apps PowerShell.

Checking the Farm:

Entering the “Get-OfficeWebApps” returns current configuration of farm:

When the farm is corrupted, removed or not available, the following error will be returned.

Checking the Host:

Entering the “Get-OfficeWebAppsHost” returns the information about allowed domain

Checking the Machine:

Entering the “Get-OfficeWebAppsMachine” returns the status of the Office Web Apps system on the server

When there are errors in Office Web Apps event viewer associated with watchdog, the status of the machine will show “Unhealthy”.

Issues: Get-OfficeWebAppsMachine returns “Unhealthy” status

This issue generally occurs when the Office Web Apps deployment was not done correctly, missing updates, missing pre-requisites or corrupted farm configuration (in case of post deployment).

Doug Deitterick’s Blog on TechNet – How to Get Office Web Apps Server 2013 to Report a Healthy Health Status – describes two possible scenarios and solution. The blog is written with Lync Server 2013 deployment. Please note that these two scenarios and solutions apply to Skype for Business Server 2015 deployment as well.

However, in some instances the machine still shows unhealthy status. The event viewer shows one or more errors from “Office Web Apps Monitoring” component.

After reboot of the server, one can see these errors repeating at every minute and slowly reporting at every 5 minutes.

Cause of the problem –

There are few causes of this problem. They are –

1) Certificate error – Could not establish trust relationship for the SSL/TLS secure channel with authority <Certificate Authority>

2) Error on health report – AgentManagerWatchdog reported status for AgentManagerWatchdog in category ‘Recent Watchdog Reports’. Reported status: Machine health is Unhealthy

3) Unknown reasons – AgentManagerWatchdog reported status for AgentManagerWatchdog in category ‘Recent Watchdog Reports’. Please see Inner Exception. Reported status: Machine health is Unhealthy

Usually, the inner exceptions points to some type of corruption in the Office Web Apps farm.

Resolution –

The resolution of Certificate error and Error on health reports are documented in Doug Deitterick’s Blog on TechNet – How to Get Office Web Apps Server 2013 to Report a Healthy Health Status.

The steps below are for resolving the “Unknown reasons” cause. To resolve this issue, please follow the steps below:

Step 1: Remove Office Web Apps Farm by entering “Remove-OfficeWebAppsFarm”. This command will remove all office web apps configurations.

Step 2: Uninstall Office Web Apps software

Step 3: Install all pre-requisites by running the command

Office Web Apps Server 2013:

Note: The Office Web Apps Server 2013 cannot be deployed on Windows Server 2016.

Windows Server 2008 R2 –

Add-WindowsFeature Web-Server,Web-WebServer,Web-Common-Http,Web-Static-Content,Web-App-Dev,Web-Asp-Net,Web-Net-Ext,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,Web-Security,Web-Windows-Auth,Web-Filtering,Web-Stat-Compression,Web-Dyn-Compression,Web-Mgmt-Console,Ink-Handwriting,IH-Ink-Support

Windows Server 2012 –

Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,InkandHandwritingServices,NET-WCF-HTTP-Activation45

Windows Server 2012 R2 –

  • Install .NET Framework 4.5.2
  • Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,InkandHandwritingServices,NET-Framework-Features,NET-Framework-Core,NET-HTTP-Activation,NET-Non-HTTP-Activ,NET-WCF-HTTP-Activation45

Office Online Server 2016:

Note: The Office Online Server 2016 cannot be deployed on Windows Server 2008 R2 or Windows Server 2012.

Windows Server 2012 R2 –

  • Install .NET Framework 4.5.2
  • Install Visual C++ Redistributable Packages for Visual Studio 2013
  • Install Visual C++ Redistributable for Visual Studio 2015
  • Microsoft.IdentityModel.Extention.dll
  • Add-WindowsFeature Web-Server, Web-Mgmt-Tools, Web-Mgmt-Console, Web-WebServer, Web-Common-Http, Web-Default-Doc, Web-Static-Content, Web-Performance, Web-Stat-Compression, Web-Dyn-Compression, Web-Security, Web-Filtering, Web-Windows-Auth, Web-App-Dev, Web-Net-Ext45, Web-Asp-Net45, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Includes, InkandHandwritingServices, Windows-Identity-Foundation

Windows Server 2016 –

  • Install .NET Framework 4.5.2
  • Install Visual C++ Redistributable Packages for Visual Studio 2013
  • Install Visual C++ Redistributable for Visual Studio 2015
  • Microsoft.IdentityModel.Extention.dll
  • Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,NET-Framework-Features,NET-Framework-45-Features,NET-Framework-Core,NET-Framework-45-Core,NET-HTTP-Activation,NET-Non-HTTP-Activ,NET-WCF-HTTP-Activation45,Windows-Identity-Foundation,Server-Media-Foundation

Note: Office Online Server April 2017 or later is required to deploy on Windows Server 2016.

Step 4: Install/Re-install Office Web Apps software

Step 5: Rebuild the farm – Create the Farm

New-OfficeWebAppsFarm -InternalUrl “https://<Internal URL FQDN>” -ExternalUrl “https://<External URL FQDN>”-CertificateName “<Certificate’s Friendly Name>” -EditingEnabled -AllowHTTP –Verbose

Step 6: Create the Host

New-OfficeWebAppsHost -Domain “<Domain>.com” –Verbose

Step 7: Check the status of Machine

Note: Usually, after rebuilding farm, it take about 30 minutes to get the machine status healthy. Watch for the error events in the Office Web Apps events. Once you see no error or warning events for 30 min, and run the above command, it will return the status healthy.

Issue: Certificate Name –

The certificate name is a friendly name of the certificate. In some odd reasons, if the name is not in proper form, the farm will be created. However, it will never work. Therefore, based on experience working with the Office Web Apps Farms, here are some best practices for the certificate friendly name:

  1. Please don’t name the name longer than 16 characters.
  2. Please don’t use any space or special characters in the name (only one that is an exception is underscore “_”)

For some reason, you have make the certificate name error then get the certificate re-issued with correct name. Then use the following command to set it:

Set-OfficeWebAppsFarm –CertificateName <New Friendly Name>

 

 

Category: infrastructureBy Catapult Systems

How to check that the Office Web App Server Web farm is deployed correct

Recently I had to troubleshoot Office Web Apps Server deployments at a couple of customer sites. I had to work through the config and sometimes the Office Web Apps server feels disconnected from the rest of the Lync configuration lync web app service error can be a difficult role to troubleshoot. I have tried to collect my notes and if I have missed something, let me know.

  • Make sure the correct prerequisites are installed, use MVP Pat Lync web app service error Lync prerequisites script
    • http://www.ehloworld.com/1697
    • Add-WindowsFeature Web-Mgmt-Console,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Filtering,Web-Windows-Auth,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Filter,Web-Includes,Web-Stat-Compression,Web-Dyn-Compression,InkAndHandwritingServices
  • On Windows Server 2012 you may also need .Net framework, this is not documented, but solved my problem
    • Add-WindowsFeature NET-Framework-Features,NET-Framework-Core
  • Make sure you used the correct cmdlet to enable the web apps farm and ran iisreset
    • New-OfficeWebAppsFarm -InternalURL https://office.domain.com-ExternalURL https://office.domain.com/-AllowHttp -CertificateName CertificateFriendlyName
    • I like to use the same URL debian /dev/sdb grub error as well as externally, that way you can use a public certificate on your internal Office Web App Server for unmanaged Lync desktop clients
  • Check Event ID 1157, make sure it states
    • HealthReportingAdapter received 4 report(s) from ProofingWatchdog successfully
  • Validate the configuratoin by navigating to this URL
  • Make sure you can access the InternalURL from the local Office Web Apps Server
  • Make sure Office Web Apps Server is published correct, as described in this post
  • Do not worry about  HealthStatus when you run Get-OfficeWebAppsMachine
  • Check your sertificate if you have multiple OWAS servers in a farm, make sure computer FQDN is part of the SAN
  • If it is still not working try rebuilding the web farm again, this has also solved my problem
    • Remove-OfficeWebAppsMachine
    • run the New-OfficeWebAppsFarmcmdlet again
  • Look for Evnet ID 41034
    • Web Conferencing Server has successfully discovered Office Web Apps Server, PowerPoint content is enabled
  • Look for Event ID 41032
    • Will show that it found the URL’s correct
    • Clicking on the internal URL should result is a server error message like in this picture
  • To force rediscovery of the URL’s restart the RTCDATAMCU service
    • Run Get-CsWindowsService RTCDATAMCU to see if there is any active conferences
    • Then stop and start the service
    • Look for Event ID 41032
  • Make sure that the Topology Builder is provisioned with the correct Office Web Apps Farm
    • Event ID 41033 is logged if the Lync server is unable to resolve the Office Lync web app service error Apps Farm

On a side note, you may want to lock down your Office Web Apps Farm so that others can not use it. Read more in this post by MCM Lync web app service error Sirvinsks: http://marjuss.wordpress.com/2013/05/03/basic-security-better-than-no-security-limit-access-to-office-web-apps-server/

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Lync Server 2013, TroubleshootingLync Server 2013, Office Web Apps Server, WAC

In a recent support case we were working on an issue where sometimes the users couldn’t use the Lync Web App.

The troubleshooting started in the Event Viewer > Lync Server, we notice that we had a few errors:

Log Name: Lync Server
Source: LS Data MCU
Date: 01/03/2017 15:00:43
Event ID: 41029
Task Category: (1018)
Level: Error
Keywords: Classic
User: N/A
Computer: lync2013fe01.gears.lab
Description:
No connectivity with the Lync Web App. Affected Web browser clients cannot use Web Conferencing modality.

Server Machine FQDN: lync2013fe01.gears.lab, Port:8061
Server Type: External-WebApp-Edge [HTTP side error:Unable to connect to the remote server]
If the problem persists this event will be logged again after 20 minutes
Cause: Service may be unavailable or Network connectivity may have been compromised.

Another error was mentioning an issue HTTP connectivity:

Log Name: Lync Server
Source: LS User Services
Date: 01/03/2017 15:04:57
Event ID: 30988
Task Category: (1006)
Level: Error
Keywords: Classic
User: N/A
Computer: lync2013fe01.gears.lab
Description:
Sending HTTP request failed. Server functionality will be affected if messages are failing consistently.

Sending the message to https://lync2013fe01.gears.lab:444/LiveServer/Replication failed. IP Address is 172.20.13.21. Error code is 2EFD. Content-Type is application/replication+xml. Http Error Code is 0.

Cause: Network connectivity issues or an incorrectly configured certificate on the destination server. Check the eventlog description for more information.
Resolution:
Check the destination server to see that it is listening on the same URI and it has certificate configured for MTLS. Other reasons might be network connectivity issues between the two servers.

Both events showed that the server could not establish a connection himself.

Then we check if the server was listening on that port:

netstat -anp TCP
netstat – Info

Get-NetTCPConnection -State Listen -LocalPort 80,8080,443,444,4443,8061

SOLUTION: Lync 2010 Web Services Error HTTP 500. Cannot Download Offline Address Book, Cannot Expand Groups…

Applies to Lync Server 2010 on Windows 2012 R2

Problem:

You installed Lync 2010 on Windows 2012 R2. Clients cannot download Lync 2010 Address Offline  Book. Also alfa antiterror v2 Groups in Lync Client. Actually all other Lync Web services like Certificate Provisioning do not work.

If you try to download OAB file using browser you got the following error:

HTTP Error 500.0 – Internal Server Error

Also the following errors loggged in IIS Logs (C:\inetpub\logs\LogFiles.)

… 10.10.xx.yy GET /abs/handler/F-16af.lsabs – 443 – 10.86.82.43 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 0
… 10.10.xx.yy GET /abs/handler/F-16ae.lsabs – 443 – 10.86.82.43 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 0
… 10.10.xx.yy POST /groupexpansion/service.svc/mex – 443 – 10.86.81.15 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 23
… 10.10.xx.yy POST /RgsClients/AgentService.svc/mex – 443 – 10.86.80.169 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 4
… 10.10.xx.yy GET /abs/handler/F-16b2.lsabs – 443 – 10.86.81.253 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 26
… 10.10.xx.yy POST /locationinformation/liservice.svc/mex – 443 – 10.86.80.169 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 12
… 10.10.xx.yy GET /abs/handler/F-16af.lsabs – 443 – 10.86.81.16 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 12
… 10.10.xx.yy POST /groupexpansion/service.svc/mex – 443 – 10.86.80.205 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 17
… 10.10.xx.yy POST /CertProv/CertProvisioningService.svc/mex – 443 – 10.106.42.100 OC/15.0.4551.1005+(Microsoft+Lync) – 500 0 2 21

Cause:

If Lync web app service error 2010 is installed on Windows 2012 R2 operating system then by default Lync 2010 Web Services Application pools run on .Net FrameWork 4.0. But Lync 2010 Application Pools must be run on .Net Version fps creator build game error the steps in KB 2777747

404.17 – Not Found error message dle fatal error load_template on a non-object you try to connect to a Lync Server 2010 web service https://support.microsoft.com/en-us/kb/2777747

  1. Click the Windows logo key to access error writing file /tmp/ errcode 28 Start screen, click Server Manager, and then click OK.
  2. In Server Manager, click Tools, and then click Internet Information Services (IIS) Manager.
  3. Expand localhost, and then click Application Pools.
  4. Right-click CsExtAuthPool, and then click Advanced Settings. Go to Gerneral\.Net CLR Version
  5. Click .NET Framework Version, click v2.0, and then click OK.
  6. Repeat steps 4 and 5 for each application pool that has a name that begins with “Cs.”
  7. Click the Windows logo key to access the Start screen, type cmd, and then click cmd.
  8. Type the following command into the Windows Command Prompt window,
    iisreset /restartand then press Enter
  9. Close the Command Prompt window.

All Lync Web Serviceses including OAB downloads will function correctly immediately. You need to wait for sometime Lync Client OAB downloads.

More Info:

Supportability is available for Lync Server 2010 and Lync 2010 clients on Windows Server 2012, Windows Server 2012 R2, and Windows 8 client operating systems
https://support.microsoft.com/en-us/kb/2777359

 

 

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FAQ about Lync Web App

This article provides answers to frequently asked questions about using Microsoft Lync Web App communications software.

In this article

Joining the meeting

Getting audio

Using instant this is terror volume 8 the meeting roster

Sharing your desktop and/or programs

Using PowerPoint

Using the whiteboard

Viewing meeting content

Joining the meeting

When I click the meeting URL, I receive a "Pop-up blocked" notification. How should I respond?

  1. Ensure that the meeting invitation is from a trusted source.

  2. Select Always allow pop-ups from this site. Do NOT select Temporarily allow pop-ups.

Top of Page

Getting audio

Sometimes, lync web app service error, the audio option, Option 1: The conference calls you, doesn't work. Why?

The main causes for this are:

  • The support team at the company that organized the meeting disabled the functionality.

  • There was a problem with the phone connection.

  • The meeting was configured incorrectly.

Top of Page

Using instant messaging

Can I apply formatting to individual words or phrases in my instant message?

In Lync Web App, only paragraph-level formatting is available. This means that you can use the text formatting tools to change the look of each message that you send, but all the text in a given message will have the same formatting.

Why can't I copy any text from previously sent instant messages to use in other messages or documents?

Lync Web App does not support copying and pasting text from the IM history pane. It also does not support saving a copy of all the meeting instant messages.

Why can't I click URLs that are sent over IM?

The support team of the company hosting the meeting has the ability to disable active URLs in the IM area.

Top of Page

Understanding the meeting roster

What are the icons next to each name in the list of meeting participants?

These icons give information about each participant's current and potential ways of interacting with the other people in the meeting. However, a participant's interaction capabilities depend on several factors, including the client from which they joined the meeting, administrative settings for the meeting, and any current connection problems.

While you may have joined the online meeting using Lync Web App, there may be other attendees who joined the meeting using Microsoft Lync 2010. These attendees will have the capability for computer audio and video (VOIP), but Lync Web App does not support these capabilities. However, if you're running Office Communicator 2007 R2 along with Lync Web App, then you'll have computer audio capability, but not video.

The icons In-meeting icons indicate that the selected participant:

  • Can send and receive instant messages.

  • Is currently speaking.

  • Has paused their video.

  • Is currently sharing their desktop, programs, a whiteboard, or polling information.

For a Lync Web App user who is an attendee, only the first two icons from the left will be available and the others will be grayed out. However, a presenter will also be able to see the last icon as active when using the sharing feature.

Top of Page

Sharing your desktop and/or programs

Is my operating system supported?

The ability to share your desktop or programs with Lync Web App is supported for all versions of Windows that are listed in Supported Platforms for Lync Web App, except for Windows Server 2000.

You cannot share your desktop or programs if you are running a Macintosh operating system or if your browser and operating system combination are not listed as a supported platform (for example, Google Chrome running on Windows).

Troubleshooting by platform

The following sections provide troubleshooting tips for users of the specified platforms.

Windows Server 2008 R2, Windows Server 2008, lync web app service error, or Windows Server 2003 operating systems

Why can't I install the Lync Web App plug-in on my computer running a Windows Server operating system?

Try disabling the Do not save encrypted pages to disk option:

  1. In Windows Internet Explorer, lync web app service error, click Tools, and then click Internet Options.

  2. On the Advanced tab, check whether the Do not save encrypted pages to disk check box is selected (by default, it is selected on server computers).

  3. Clear this check box to successfully download and run the Lync Web App plug-in installer.

If this doesn't lync web app service error, you might also need to change the default security settings. For instructions about how to change these settings, see DisableMSI (Windows).

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Windows 7 operating system with Internet Explorer 8

After I update the Lync Web App plug-in, the meeting window stops responding.

This is a known issue in cases where an older version of the Lync Web App plug-in is uninstalled during a meeting.

  • Close the browser window, and then rejoin the meeting.

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Windows 7, Windows Vista, Windows Server 2008 R2, or Windows Server 2008 operating systems

I have more than one monitor. Why don't I have the option to share a monitor?

To share a monitor, the DPI on your computer must be set to 100% or lower. (The DPI, from "dots per inch", is a measure of pixel density.) To view and change the DPI setting, go to your computer's display settings. In Bad checksum bios error 7 and Windows Vista, display settings are in Control Panel, lync web app service error, in the Appearance and Personalization section.

Top of Page

Windows Server 2008 operating system with Internet Explorer 8

I receive a "JavaScript not enabled" message when I try to install the Lync Web App plug-in. What should I do?

  1. In Internet Explorer, click Tools, and then click Internet Options.

  2. On the Security tab, click Trusted sites, and then click the Sites button. Make sure that you add both the "http" and "https" URLs to the Trusted sites, for example, "https://*.contoso.com" and "http://*.contoso.com".

  3. Under Add this website to the zone, enter the meeting URL details (for example, "https://*.contoso.com"), lync web app service error, and then click Add.

Top of Page

Windows Server 2008 operating system or Windows Vista operating system with Service Pack 2 or earlier

When I try to install the Lync Web App plug-in, the process fails and I receive a "UAC" error.

Make sure that User Account Control (UAC) is turned on, and then try installing the plug-in again. For instructions, lync web app service error, see Turn User Account Control on or off.

Top of Page

Internet Explorer

After I install the Lync Web App plug-in, I receive the following Program Compatibility Assistant message: "This program spds error loading not have installed correctly." What should I do?

You might see this dialog box if someone else has already installed the plug-in on the computer that you're using. In this case, click This program installed correctly, and continue working.

Top of Page

Windows Server 2000 operating system, Macintosh operating systems, or Google Chrome

Why can't I share my desktop or a program?

Desktop and program sharing is not supported on Windows Server 2000 or Macintosh operating systems or with the Google Chrome Internet browser. To participate in sharing sessions, join the meeting using a supported platform. For more information, see Supported Platforms for Lync Web App.

Top of Page

Any browser and operating system

I can't install the Lync Web App plug-in. What should I do?

Make sure that your computer is running a supported operating system. For a list of supported operating systems, see Supported Platforms for Lync Web App.

When I click Install plug-in or Update plug-in, I receive a "Pop-up blocked" notification. How should I respond?

  1. Exit the meeting.

  2. Ensure that the meeting invitation is from a trusted source.

  3. Rejoin the meeting.
    The "Pop-up blocked" notification will re-appear.

  4. Select Always allow pop-ups from this site. Do NOT select Temporarily allow pop-ups.

I cannot share my desktop or program. How should I troubleshoot this?

Make sure that your browser is not in "Run as Administrator" mode, restart the browser, and then try sharing again.

When I try to share my desktop or program, I receive the following message: "Cannot start sharing in two simultaneous meetings."

  • On your computer, close any other browser window that is part of the meeting or that shows the exit screen from the lync web app service error, and then try sharing again.

I receive the following error message while installing the Lync Web App plug-in: "The process terminated unexpectedly." What should I do?

This might occur because another installation is already in progress on your computer. Click OK in the message, wait for the first installation to finish, and then proceed with your sharing activity. You will have to restart the plug-in installation.

Alternatively, this may occur if you chose not to restart the browser during installation. Restart the browser, and try installing the plug-in again.

After I start sharing my screen, I receive the following Windows Security Alert: "Windows Firewall has blocked some features of this program." What should I do?

Screen sharing does not require this permission, so you can ignore this alert. Select any response, close the alert, and continue sharing.

Why does my desktop error vmware workstation program sharing always fail?

If your computer is configured to use HTTP proxy server, which requires an authentication, you will not be able to share your desktop or programs. Contact the meeting organizer for other collaboration options.

Top of Page

Using PowerPoint

When I give a presentation in a meeting, why do the animation effects look different from the ones I created?

Lync Web Lync web app service error is unable to replicate all of the animation effects from the Microsoft PowerPoint presentation graphics lync web app service error. When replication fails, lync web app service error, you'll see either a different effect or a static page.

During a PowerPoint presentation, why can't I add notes to the slides while others in the meeting can?

The meeting organizer or a presenter might have set the meeting options so that only participants with certain roles have permission to annotate PowerPoint slides. Your role in the meeting may not have this privilege.

During a PowerPoint presentation, lync web app service error, why can't I view slides other than the one currently being presented?

The meeting organizer or a presenter may have set the meeting options so that only participants with certain roles have permission to navigate to slides other than the one being actively presented. Your role in the meeting may not have this privilege.

Top function.require-once fatal error fastcgi Page

Using the whiteboard

Why can't I paste certain image types onto the whiteboard?

The Microsoft Silverlight browser plug-in does not support pasting of certain image types. (Silverlight is the platform that the whiteboard program uses to display content.)

Top of Page

Viewing meeting content

Why am I not able to independently view content that was uploaded to the meeting but is not currently being presented?

The meeting organizer or a presenter may have set the meeting options so that only participants with certain roles have permission to privately view meeting content when it is not being presented. Your role in the meeting may not have this privilege.

Top of Page

Read these next.

Hey guys,

I'm currently having a problem that is most likely tied to Office 2016 as I tested the installation on my 2010 install and had no issues.

A colleague needs to join online meetings, that are hosted via Lync.

Because he just got a new PC with Office 2016, he is prompted to download and install "LWAPlugin64BitInstaller32.msi", but the installation fails with the error that it can't find the correct .msi for "Skype For Business Web Plug-In", which would be "SkypeForBusinessPlugin.msi".

It's this old dialogue (just had to use Google, because I missed to take a screenshot; Ignore the red marking and filename as this is just to show you which error I'm talking abotu):

The real problem is, that I can't find a single darn place to download "SkypeForBusinessPlugin.msi" as the only site Google shows me on the first pages looks suspicious from the URL given.
All MS help sites for Office/Skype For Business/Lync lead to no help at all and especially no download links.

I tried:

  • installing the Lync 2010 Attendee software to no avail
  • installing the most recent update for Lync 2016 (as it might be included, dunno), but the installer told me that no such product was installed
  • retyping the meeting-link into a Skype For Business format, but I either missed something or it's not possible
  • installing "Skype Meetings App" that works for Skype meetings, but not for Lync (although I read that Lync was replaced by Skype For Business(?))

Another user with Office 2016 has the same issue and like I mentioned earlier, I had no problems with Office 2010, so I'm pretty much 99% sure, that Office 2016 is missing something or breaks something in the system.

The Office version in question is Home and Business, btw.

Can anyone assist or at least share some experience?

  • I had some strange problems with Skype and Office 2016, too.

    The solution was easy: Office 2016 (Professional Plus in my case) installed its own Skype for Business software, which block the execution of the "SkypeForBusinessPlugin.msi"

    When you open "Apps & Features" and choose "Modify"you should see "Skype for Ricoh sc 546 error in the list.

    Once you removed that feature, you should be able to run the web plugin, that usually is soapui mozilla syntax error, when you open a meeting.

    Maybe that link helps with getting the right installer:
    Trouble installing the Skype for Business Web App plug-in?

    Hope it helps .

    Was this post helpful?thumb_upthumb_down
  • Sadly, the link doesn't help at all, because there's nothing to download. The pictures show that it wants you to download Skype For Business, but in my case, it's Lync :/

    When I click "Modify" for Office 2016 Home and Business, it only gives you 2 options: Fast repair and online repair. I clicked nothing, but I'll try tomorrow. It shouldn't really help though, as the Lync Web App installer is looking for the installer for Skype For Business :X

    Office started to piss me off since 2013, honestly.

  • I feel your pain. I had a lot of fun getting web-conferences up, too.

    Smashing Lync and Skype together is not very helpful. :-)

    Maybe you get a chance to start it with the tips below:

    support.microsoft.com

    Ignoring, that it is Chrome related, you may be able to copy the link and use a alternative browser.

  • I already tried appending the ?sl=1 to no avail as well :D

  • Okay, here's the solution:

    1. Make sure the user concerned has admin rights (just for this installation, you can revoke the rights afterwards) and is logged in as the Lync plugin can't be installed for every user at once.
    2. Install "SkypeMeetingsApp.msi", which you can get from this lync web app service error meeting by clicking on the link in step 1: https://meet.lync.com/microsoft/sebros/7QRH5WR8
    3. Visit https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed and run the Fix It tool by Microsoft (therefore you need admin rights for the user).
    4. Now I don't know the exact english terminology, because I'm german, but choose "Installation [.]" (should be the upper choice)
    5. Wait for the Fix It tool lync web app service error finish scanning for installed software
    6. Select "Skype For Business Web-App" or "Skype For Business Web App Plugin" (I don't know the exact name anymore)
    7. Choose "Yes, try uninstalling" and wait for it to finish, then close the Fix It tool
    8. Now lync web app service error installing the Lync Web App Plugin again, lync web app service error, which should now work just fine.
    9. OPTIONAL: In Firefox press CTRL+SHIFT+A to open Add-Ons, go to Plugins and set "Microsoft Lync Web App Plug-in" to "always activate", so that your user lync web app service error some clicks. User friendly.
    10. OPTIONAL (or 100% needed for some admins): Revoke the admin rights for the user.

    What these 8 necessary steps seem to be doing is the following:

    • Installing the plugin for Skype's For Business Web App seems to overwrite some Skype/Lync related stuff that comes with Office 2016
    • Uninstalling the plugin right afterwards seems to clear this spot entirely, leaving it open for the Lync Web App Plugin to be installed

    I only have 3 words for this: F. M. L. !!!

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  • Danke für die Info :-)

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youtube video

Join a meeting using Lync Attendee or Lync Web App

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