Socket write error outlook

socket write error outlook

There are many reasons why sending or receiving a message could fail. This guide provides solutions to solve your send/receive errors with. An operation that takes a long time to complete (such as a connect) was attempted on a non-blocking socket. Winsock description: The Windows Sockets definition. Experts generally refer to SOCKET_READ_ERROR as a "runtime error". Developers expend a lot of time and effort to write code to make sure Microsoft Outlook.

watch the thematic video

Como Corrigir Erro do Outlook Não Pode Se Conectar ao Servidor?

Socket write error outlook - are mistaken

‘Failed to connect socket: Connection timed out’ error – Here’s how to fix it?

Unable to send mail at the right time can even result in the loss of a major business opportunity.

Quite frustrating! we know.

And, when error messages contain technical jargons, it becomes more frustrating.

One such error is “failed to connect socket connection timed out“.

Fixing email delivery problems of our customers is one of the common tasks that we do as part of our Outsourced Technical Support Services for web hosts.

Today, we’ll discuss the top 4 reasons for this error and how we fix it.


Failed to connect socket: Connection timed out – What this means?

Simply put, the socket is the end point of communication.

In a normal mail delivery, the client socket connects to a listening server socket. And, communication happens once this connection is successful.

‘failed to connect socket connection timed out’ means that the connection to the mail server fails or the mail server can no longer be reached.


Failed to connect socket: Connection timed out – Causes and Fixes

Now let’s see the main reasons for this error and how our Support Engineers fix them.

1) Wrong SMTP host and port

Users should enter the mail server details in their email application.

For example, if they use Gmail as the email server, the SMTP host should be

Sometimes, a typo in the hostname or an inactive mail server can result in this error.

Similarly, the default SMTP port is 25, but some email providers use custom ports such as 587 to reduce spam.

In addition to that, some mail servers only allow emails via SSL port  465.

So, incorrect SMTP host or port entry in the SMTP settings of the email application can cause email delivery errors.



Firstly, out Support Engineers check the DNS connectivity of the mail server with the below command.


Further, to identify the correct SMTP port and it’s connectivity, we use the below command.


Later, we check and verify that correct SMTP settings are used in the email application.

[Trouble with your emails and can’t identify where it went wrong? Don’t worry our Support Engineers can help you here.]


2) Server firewall restrictions

Firewalls play a crucial role in server security. These firewalls can sometimes block access to some IPs or IP ranges based on the abnormal behavior.

For example, some servers block access from the IP address, if the number of connections from that IP address exceeds the threshold value.

So, if the firewall doesn’t allow connection, users will see the error ‘failed to connect socket connection timed out’.



Firstly, our Support Engineers check and verify that the user’s IP address is blocked in the server firewall. We use online tools like to get the public IP address of the customer.

If the IP address is blocked in server firewall, we immediately remove it and restore the email connectivity. After that, we identify the reason for the firewall block and inform the customer.

Additionally, we whitelist the IP address in the server for a certain period of time, after confirming that it’s a legitimate request.


3) ISP port blocks

The default SMTP port is 25. But, most of the ISPs block this port to curb spam and abuse.

And, this is another common reason for the error.



Our Support Experts check the traceroute results from user’s PC to the mail server.

This gives an idea of network connectivity issues in any of the intermediate networks between the mail server and user PC.

If we find problems at the ISP level, we suggest customers to contact them.

Alternatively, we configure the mail server at alternate ports such as 587 to override ISP port blocks and restore email delivery.

Once the mail server is configured on the new port, we whitelist that port in the firewall to allow incoming connections.


4) PC firewall issues

This can happen at times.

Antivirus software or third party firewalls on the user’s PC can sometimes block connections to certain IPs, including the server IP.

As a result, it can give error while connecting to the mail server from the user’s PC.



To check the connectivity problems from user’s PC to mail server, we get the telnet results from the user’s PC to mail server port.

In this way, we identify if the user can connect to the SMTP port of the mail server.

If the connection fails, we suggest the customers to disable local firewall and antivirus and give a try.

[Need help solving your ongoing email problems? Click here to get a Support Expert to look in your issue.]



In short, ‘failed to connect socket connection timed out error’ can occur due to wrong SMTP host or port settings, ISP firewall blocks and more. Today, we’ve discussed the top 4 reasons for this error and how our Support Engineers fix them.


Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.


var google_conversion_label = "owonCMyG5nEQ0aD71QM";

How To Fix Microsoft Outlook Error 0x800CCC12

What Causes Error 0x800CCC12 at Runtime?

In the majority of cases you'll see SOCKET_READ_ERROR during the booting process of Microsoft Outlook. We can identify the origin of error 0x800CCC12 runtime errors as follows:

Error 0x800CCC12 Crash - The program encountered an error 0x800CCC12 error because of a specified task, and terminated the program. This is typically when Microsoft Outlook is unable to process the data to a satisfactory form and so cannot produce the expected output.

SOCKET_READ_ERROR Memory Leak - When a Microsoft Outlook memory leak happens, it will result in the operating system running sluggish due to a lack of system resources. There are some potential issues that may be the reason for getting runtime problems, with incorrect coding leading to infinite loops.

Error 0x800CCC12 Logic Error - A logic error triggers the wrong output even when the user has given valid input data. This is due to errors in Microsoft Corporation's source code handling input improperly.

File corruption, missing, or deleted SOCKET_READ_ERROR files can result in Microsoft Outlook errors. Ordinarily, installing a new version of the Microsoft Corporation file will repair the problem creating the error. We also recommend running a registry scan to clean up any invalid SOCKET_READ_ERROR references which could be cause of the error.

Common SOCKET_READ_ERROR Error Messages

Partial List of SOCKET_READ_ERROR Microsoft Outlook Errors:

  • "SOCKET_READ_ERROR Application Error."
  • "SOCKET_READ_ERROR not valid."
  • "Sorry, SOCKET_READ_ERROR encountered a problem."
  • "Sorry, we can't find SOCKET_READ_ERROR."
  • "SOCKET_READ_ERROR not found."
  • "Error starting program: SOCKET_READ_ERROR."
  • "SOCKET_READ_ERROR is not running."
  • "SOCKET_READ_ERROR failed."
  • "Faulting Application Path: SOCKET_READ_ERROR."

SOCKET_READ_ERROR EXE errors happen during Microsoft Outlook installation, while running SOCKET_READ_ERROR-related applications (Microsoft Outlook), during startup or shutdown, or during installation of Windows OS. When seeing the SOCKET_READ_ERROR error, please record occurrences to troubleshoot Microsoft Outlook, and to help Microsoft Corporation find the cause.

Creators of SOCKET_READ_ERROR Difficulties

SOCKET_READ_ERROR problems can be attributed to corrupt or missing files, invalid registry entries associated with SOCKET_READ_ERROR, or a virus / malware infection.

More specifically, these SOCKET_READ_ERROR errors can be caused by:

  • SOCKET_READ_ERROR registry keys invalid / corrupted.
  • Virus or malware corrupting SOCKET_READ_ERROR.
  • SOCKET_READ_ERROR mistakenly deleted or maliciously by software unrelated to the Microsoft Outlook application.
  • Another software in conflict with Microsoft Outlook, SOCKET_READ_ERROR, or shared references.
  • Incomplete or corrupt Microsoft Outlook (SOCKET_READ_ERROR) from download or installation.

Product by Solvusoft

Download Now
WinThruster 2022 - Scan your PC for computer errors.

Compatible with Windows 11, 10, 8, 7, Vista, XP and 2000

Optional Offer for WinThruster by Solvusoft EULA Privacy Policy

Read time 8 minutes

John had been using Outlook for as long as he could remember. It was his go-to application for email, and he had never had any problems with it until now. He was getting an IMAP error – 0X800CCC0E – and he didn’t know how to fix it.

It has been a never ending struggle for users like John. The error 0x800CCC0E is probably the most common error that MS Outlook, Outlook Express or similar email client users face while performing the email communication. This error can occur due to various reasons such as incorrect server settings, incorrect username or password, etc. But to your’s & John’s rescue, this article discusses the exact error that looks as followed:

The connection to the server has failed. Account: ‘your_account’, Server:’your_SMTP_server’, Protocol: SMTP, Port: 25, Secure (SSL): NO, Socket error: 10061, Error Number: 0x800ccc0e

After getting this error, it is always good to know why the error has occurred and how it can be resolved. The error message: 0X800CCC0E pops up because of number of reasons. This article thoroughly explains the causes of the error and some guidelines to easily fix the issue. Let’s talk about the cause first.

Reasons behind getting the Error 0x800CCC0E

The main reason behind the error 0x800CCC0E is a disturbed Internet connection. Any configurational changes that are blocking Outlook connection can also be a reason behind this error.

Some of the most common reasons behind 0x800CCC0E are listed below:

  • Loss of connectivity to the Internet
  • Antivirus settings restricting the connection
  • Windows Firewall blocking certain features of Outlook
  • Suspicious emails
  • SMTP authentication error
  • Faulty Add-ins
  • Corrupted files
  • Incorrect configuration with wrong port numbers

You should know the exact culprit in order to fix the issue quickly.

Resolving the IMAP error -0X800CCC0E in MS Outlook

To fix the error, do the actions mentioned in the steps given below.

  1. Check the Internet Connection
    If you are facing the IMAP error – 0X800CCC0E, it is possible that your internet connection is not working properly. To resolve this issue, please check your internet connection and make sure that it is working properly. Once you have verified that your internet connection is working properly, you should be able to resolve the IMAP error – 0X800CCC0E.
  2. Check the settings for the Email Account in Outlook
    If you encounter the IMAP error – 0X800CCC0E while using Microsoft Outlook, it is likely that your email account settings are incorrect. To resolve this issue, please follow the steps below:
    1. Open Microsoft Outlook and go to the “File” tab.
    2. Select “Account Settings” from the drop-down menu.
    3. Click on the “Email” tab.
    4. Double-click on your email account to open the “Account Settings” dialog box.
    5. Ensure that the “Incoming mail server (IMAP)” setting is correct. It should be set to (replace yourdomainname with your actual domain name).
    6. Ensure that the “Outgoing mail server (SMTP)” setting is correct. It should be set to (replace yourdomainname with your actual domain name).
    7. Click on the “OK” button to save your changes and close the dialog box.
    8. Close Microsoft Outlook and restart it. You should now be able to access your email account without any issues.
  3. Delete email messages if they look suspicious
    If you are receiving the IMAP error – 0X800CCC0E, it is likely that you have received a suspicious email message. To resolve this error, simply delete the email message from your inbox. If you are unsure about the message, you can always check with the sender to confirm its legitimacy before deleting it.
  4. Check the antivirus application & disable it

    If you are encountering IMAP error – 0X800CCC0E while trying to access your email account, then there might be some issue with the antivirus application installed on your computer. This error usually occurs when the antivirus program blocks the required ports for accessing the email account.

    To resolve this issue, you need to check the settings of your antivirus program and disable it temporarily. Once the antivirus program is disabled, try accessing your email account again and see if the error still persists. If the error is resolved, then you can enable the antivirus program and add an exception for the email application in its settings.

  5. Check firewall configurations
    Make sure that your firewall does not block Outlook.exe from accessing Internet. However, this method has some security risks associated with it. So follow this method, only with caution.
  6. Start Outlook in Safe Mode

    Launching outlook in safe mode can resolve many outlook errors.

    • In latest Windows versions like 10/8.1/8/7/Vista,
      In the Search bar, type outlook.exe/safe and hit Enter.
    • In Windows 2003, 2000 and XP,
      In Start>Run, type outlook.exe/safe and click OK.
  7. The Outlook application will be opened in safe mode. Now, click on File>Options. Click the Add-ins option from the left panel and then click the Go option against the Manage Com Add-ins section from the right panel. Unselect the Add-ins and click OK to eliminate any issue through the add-ins.
  1. Verify your Outlook profile
    To verify the working of your Outlook, create a new profile and send/receive messages with the new profile. If it is working fine, make the new profile as the default profile.

    Creating a new Outlook profile and setting it as the default profile will help you in fixing many Outlook errors.

  2. Clean all the messages stuck in Outbox
    • Select the Work Offline mode under Send/Receive tab

      Work Offline

    • Select the Outbox folder, move the messages to the Draft folder or Delete the message stored in Outbox folder.
  3. Increase server timeout setting

    Server timeout setting can be modified by following the steps:

    • Launch Outlook.
    • Got to File>Info>Account Settings>Account Settings

      Account Settings

    • Select the target account and click on Change.

      Select the target account

    • Select More Settings and click on Advanced tab.
    • Increase the server timeout settings until the error is resolved.
      Increase the server timeout settings
  4. Third party tools causing a problem
    There are various third -party products like Net Nanny, Marketscore (Netsetter) Internet Accelerator, and Panicware Pop-Up Stopper that may cause errors in Outlook. So just be aware of them.
  5. SMTP server settings

    The IMAP error 0x800ccc0e can happen due to SMTP server settings and email configuration settings. There are 2 methods to modify the SMTP settings.

    Method 1: Change the outgoing server settings

    • Go to Outlook>File>Account Settings>Account Settings.
    • Under Email tab, select your email account and double-click on it.
    • In the new dialogue box, select More Settings.
    • Under the Outgoing Server tab, select the checkbox ‘My outgoing server(SMTP) requires authentication. Click OK.
    • Restart Outlook and check if the error persists.

    Method 2: Change server port number

    • This process is almost same till you reach More Settings option while doing Method I.
    • Now, under the Advanced tab write the value for Outgoing server (SMTP) as 587. Click OK

  6. Try Outlook recovery tools
  7. Additionally, you can start Outlook in safe mode and can try the free PST repair tool (scanpst.exe). It is sure that the after trying all these steps, you will be able to fix the error. However, if you are not able to resolve the Outlook error 0x800ccc0e by utilizing the methods as described then it is ideally recommended to try a third party Outlook Recovery software like Kernel for Outlook PST Repair.

    It is the best PST recovery software for MS Outlook 97, 98, 2000, 2002, 2003, 2007, 2010, 2013, 2016, 2019 versions. To repair Outlook PST files with best software to repair PST databases, download the free evaluation version to evaluate and test the features and functions. Later, you can download the licensed version to avail the software without any restrictions.

Download Now

Wrapping Up

So, there you have it. We’ve walked through the methods that should help you resolve the IMAP error – 0X800CCC0E. Hopefully one of these solutions worked for you and your email is now up and running smoothly again. If not, you can try to fix some PST corruption issues with Outlook. Try our recommended tool as it is an efficient and reliable tool that repairs corrupt or damaged PST files within minutes. You can try the free trial version of the software to evaluate its performance.

Socket Error 10054 Connection reset by peer AFTER mail was succesfully sent

In my application about 100 emails (invoices) are sent in a loop, once or twice a week. 99% goes without trouble, but sometimes the user get the error "10054 connectio reset by peer". I know what that means, but the real problem is that the mail wás sent. So, my appliction assumes something went wrong, but the customer receives the invoice. This cause problems in the invoice-numbers (double). My questions are:

  1. Is there a way to tell if the mail was sent? (eg: eventhandler on "workend")
  2. How is it possible this error occurs AFTER the mail was sent ?

I use the TidSMTP Indy component in Delphi 10.4, the mail is sent via outlook, port 25.

Unfortunatly, it is not possible for me to provide a usefull example, since there is only 1 customer where this occurs,and roughly only in 1 out of 500 mails.

I do not have a trace. Would it be enough to fill all the eventhandlers of the IdSMTP-component and write the parameters to CodeSite?

kind regards,

Dirk Janssens.

Terms socket write error outlook


Leave a Comment