Http error 500.0 internal server error

http error 500.0 internal server error

Resolve the HTTP 500.0 Internal Server Error on OfficeScan (OSCE) web console of OfficeScan by checking PLMDAL site and ISAPI Filters in IIS. 500 Internal Server Error - this error means that the problem occurred while connecting to the server and the website could not be loaded. blog.hubspot.com › marketing › http-500-internal-server-error.

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500 Internal Server Error

The 500 Internal Server Error is a very general HTTP status code that means something has gone wrong on the website's server, but the server could not be more specific on what http error 500.0 internal server error exact problem is.

Are You the Web Manager? See Fixing 500 Internal Server Error Problems on Your Own Site towards the bottom of the page for some better advice if you're seeing the error on one or more of your pages.

How You Might See a 500 Error

The error message might be seen in many ways because each website is allowed to customize the message.

Here are several common ways that you might see the HTTP 500 error:

  • 500 Internal Server Error
  • HTTP 500 - Internal Server Error
  • Temporary Error (500)
  • Internal Server Error
  • HTTP 500 Internal Error
  • 500 Error
  • HTTP Error 500
  • 500. That's an error

Since a 500 Internal Server Error is generated by the website you're visiting, you could see one in any browser in anyoperating system, even on your smartphone.

Most of the time, it displays inside the browser window, just as web pages do.

Cause of HTTP 500 Errors

Like we mentioned above, Internal Server Error messages indicate that something, in general, is wrong.

Most of the time, "wrong" means an issue with the page or site's programming, but there's certainly a chance that the problem is on your end, http error 500.0 internal server error, something we'll investigate below.

More specific information about the cause of a particular HTTP 500 error is often provided when it occurs on a server using Microsoft IIS software. Look for numbers after 500, as in HTTP Error 500.19 - Internal Server Error, which means Configuration data is invalid.

How to Fix the 500 Internal Server Error

Like we alluded to above, the 500 Internal Server Error is a server-side error, meaning the problem probably isn't with your computer or internet connection but instead with hasp hl error 27 website's server.

While not probable, there may be something wrong on your end, in which case we'll look at some things you can try:

  1. Reload the web page. You can do that by selecting the refresh/reload button, pressing F5 or Ctrl+R, or trying the URL again from the address bar.

    Even if the 500 Internal Server Error is a problem on the webserver, the issue might be temporary. Trying the page again will often be successful.

    If the message appears during the checkout process at an online merchant, be aware that duplicate attempts to checkout may end up creating multiple orders— and multiple charges! Most merchants have automatic protections from these kinds of actions, but it's still something to keep in mind.

  2. Clear your browser's cache. If there's a problem with the cached version of the page you're viewing, http error 500.0 internal server error, it could be causing HTTP 500 issues.

    Caching issues do not often cause internal Server Errors, but we have, on occasion, seen the error go away after clearing the cache. It's such an easy and harmless thing to try, so don't skip it.

  3. Delete your browser's cookies. You can correct some 500 Internal Server Error issues by deleting the cookies associated with the site on which you're getting the error.

    After removing the cookie(s), restart the browser and try again.

  4. Troubleshoot as a 504 Gateway Timeout error instead. It's not very common, but some servers produce a 500 Internal Server Error when in reality, 504 Gateway Timeout is a more appropriate message based on the cause of the problem.

  5. Contacting the website is http error 500.0 internal server error option. There's a good chance that the site's administrators already know about the 500 error, but if you suspect they don't, letting them know helps both you and them (and everyone else).

    Most sites have support-based social network accounts, and a few even have email and telephone numbers.

    If it looks like the site is down entirely and you can't find a way to report the 500 Internal Server Error message to the website, it might help your sanity to keep up with the outage on Twitter. You can usually search for #websitedown on Twitter, as in #gmaildown or #facebookdown.

  6. Come back later. Unfortunately, at this point, the 500 Internal Server Error is no doubt a problem outside of your control that will eventually get fixed by someone else.

If the 500 Internal Server Error message appears at checkout during an online purchase, it might help to realize that sales ftp_login throws error probably being disrupted—usually a great incentive to the online store to fix the issue very quickly!

Even if you're getting the 500 error on a site that doesn't sell anything, like YouTube or Twitter, as long as you've let them know about the problem, or at least tried, there's little more you can do than wait it out.

Fixing 500 Internal Server Error Problems on Your Own Site

A 500 Internal Server Error on your website requires an entirely different course of action. As we mentioned above, most 500 errors are server-side errors, meaning it's likely your problem to fix if it's your website.

There are lots of reasons why your site might be serving a 500 Error to your users, but these are the most common:

  • A Permissions Error. In most cases, a 500 Internal Server Error is due to an incorrect permission on one or more files or folders. In most of those cases, an incorrect permission on a PHP and CGI script is to blame. These should usually be set at 0755 (-rwxr-xr-x).
  • A PHP Timeout. If your script connects to external resources and those resources timeout, an HTTP 500 error can occur. Timeout rules, http error 500.0 internal server error better error handling in your script, should help if this is the cause of the 500 error.
  • A Coding Error in .htaccess. While not as common, be sure to check that your site's .htaccess file is properly structured.

If you're running WordPress, Joomla, or another content management or CMS system, be sure to search their support centers for more specific help troubleshooting a 500 Internal Server Error, http error 500.0 internal server error.

If you're not using an off-the-shelf content management tool, your web hosting provider, like InMotion, Dreamhost, IONOS (1&1), etc., probably has some 500 Error help that might be more specific to your situation.

More Ways You Might See an Internal Server Error

When Google services, like Gmail, are experiencing the error, http error 500.0 internal server error, they often report a Temporary Error (500), or simply 500, http error 500.0 internal server error.

When Windows Update is involved, it appears as a WU_E_PT_HTTP_STATUS_SERVER_ERROR message or 0x8024401F error.

If the website that reports the 500 error is running Microsoft IIS, you might get a more specific http error 500.0 internal server error message:

500 Internal Server Error List
CodeExplanation
500.0Module or ISAPI error occurred.
500.11Application is shutting down on the web server.
500.12Application is busy restarting on the web server.
500.13Web server is too busy.
500.15Direct requests for Global.asax are not allowed.
500.19Configuration data is invalid.
500.21Module not recognized.
500.22An ASP.NET httpModules configuration does not apply in Managed Pipeline mode.
500.23An ASP.NET httpHandlers configuration does not apply in Managed Pipeline mode.
500.24An ASP.NET impersonation configuration does not apply in Managed Pipeline mode.
500.50A rewrite error occurred during RQ_BEGIN_REQUEST notification handling. A configuration or inbound rule execution error occurred.
500.51A rewrite error occurred during GL_PRE_BEGIN_REQUEST notification handling. A global configuration or global rule execution error occurred.
500.52A rewrite error occurred during RQ_SEND_RESPONSE notification handling. An outbound rule execution occurred.
500.53A rewrite error occurred during RQ_RELEASE_REQUEST_STATE notification handling. An outbound rule execution error occurred. The rule is configured to be executed before the output user cache gets updated.
500.100Internal ASP error.

Errors Like the HTTP 500 Error

Many browser error messages are similar to the 500 Internal Server Error message because they're all server-side errors, like 502 Bad Gateway, 503 Service Unavailable, and 504 Gateway Timeout.

Many client-side HTTP status codes also exist, like the popular 404 Not Found error, among others. You can see all of them in our HTTP Status Code Errors list.

Thanks for letting us know!

HTTP Error 500.0 - Internal Server Error error when you open an IIS Webpage

  • Article
  • 5 minutes to read

This article helps you resolve the HTTP 500.0 error that occurs when you visit a Web site that is hosted on IIS.

Original product version:   Internet Information Services
Original KB number:   942031

Summary

This article describes HResult codes when you encounter 500.0 error on an Internet Information Services (IIS) Web application. This article is intended for Web site administrators. These errors have many causes and can affect many different system configurations. The procedures that are described in this article must be performed by a member of the administrator group on the server.

End users that experience these errors should notify the Web site administrator of the problem.

HResult code

HTTP Error 500 message indicates that a problem has occurred on the Web server that hosts the Web site at the time the error is returned.

The following is the details of these errors.

HResult code 0x80070032

Error message:

Server Error in Application "application name"
HTTP Error 500.0 - Internal Server Error
HRESULT: 0x80070032
Description of HRESULT ISAPI filter drive:\FilePath\ISAPI_FLT.dll tried to register for notification.

Cause

This problem occurs because IIS 7.0 does not support the Internet Server API (ISAPI) filter that registers for the notification.

Resolution

Do not use the ISAPI filter that registers for the notification in IIS.

HResult code 0x80070035

Error message:

Server Error in Application "application name"
HTTP Error 500.0 - Internal Server Error
HRESULT: 0x80070035
Description of HRESULT The page cannot be displayed because an internal server error has occurred.

Cause

This problem occurs because the server that is running IIS 7.0 cannot access the configured root directory of the requested location.

Resolution

Make sure that the server that is running IIS 7.0 can access the configured root directory of the requested location.

HResult code 0x8007000d

Error message:

Server Error in Application "application name"
HTTP Error 500.0 - Internal Server Error
HRESULT: 0x8007000d
Description of HRESULT Handler "ASPClassic" has a bad module "IsapiModule" in its module list.

Cause

This problem occurs because the ISAPIModule module is missing from the modules list for the Web site. The ISAPIModule module is in this location: drive:\Windows\System32\inetsrv\isapi.dll.

Resolution

Add the ISAPIModule module to the modules list for the Web site. To do this, follow these steps:

  1. Click Start, click Run, type inetmgr.exe, and then click OK.
  2. In IIS Manager, expand <server name>, expand Web sites, and then click the Web site that you want to modify.
  3. In Features view, double-click Module.
  4. In the Actions pane, click Add Native Module.
  5. In the Add Native Module dialog box, click to select the IsapiModule check box, and then click OK.

HResult code 0x800700c1

Error message:

Server Error in Application "application name"
HTTP Error 500.0 - Internal Server Error
HRESULT: 0x800700c1
Description of HRESULT The page cannot be displayed because an internal server error has occurred.

Cause

This problem occurs because a script mapping is not valid.

Resolution

Make sure that the script-mapping points to the ISAPI.dll file that can process the request. To do this, http error 500.0 internal server error, follow these steps:

  1. Click Start, click Run, type inetmgr.exe, and then click OK.
  2. In IIS Manager, expand <server name>, expand Web sites, and then click the Web site that you want to modify.
  3. In Features view, double-click http error 500.0 internal server error Mappings.
  4. Make sure that the script-mapping points to the correct ISAPI.dll file. For example, .asp files should map to the %windir%\system32\inetsrv\asp.dll file.

HResult code 0x80070005

Error message:

Server Error in Application "application name"
HTTP Error 500.0 - Internal Server Error
HRESULT: 0x80070005
Description of HRESULT LoadLibraryEx on ISAPI filter "path_of_isapi" failed.

Cause

This problem occurs because an ISAPI filter that is not valid is loaded at the global level or at the Web site level.

Resolution

Remove the ISAPI filter that is not valid. To do this, follow these steps:

  1. Click Start, click Run, type inetmgr.exe, and then click OK.
  2. In IIS Manager, expand <server name>, expand Web sites, and then click the Web site that you want to modify.
  3. In Features view, double-click ISAPI Filters.
  4. Right-click the ISAPI filter that you want to remove, and then click Remove.

HResult code 0x8007007f

There are two possibilities for HResult 0x8007007f:

  • Error message 1:

    Server Error in Application "application name"
    HTTP Error 500.0 - Internal Server Error
    HRESULT: 0x8007007f
    Description of HRESULT Calling GetProcAddress on ISAPI filter "path_of_isapi" failed.

    Cause

    This problem occurs because an ISAPI filter that is not valid is loaded at the global level or at the Web site level.

    Resolution

    To resolve the problem, remove the ISAPI filter that is not valid. To do this, follow these steps:

    1. Click Start, click Run, type inetmgr.exe, and then click OK.
    2. In IIS Manager, expand <server name>, expand Web sites, and then click the Web site that you want to modify.
    3. In Features view, http error 500.0 internal server error, double-click ISAPI Filters.
    4. Right-click the ISAPI filter that you want to remove, and then click Remove.
  • Error message 2:

    Server Error in Application "application name"
    HTTP Error 500.0 - Internal Server Error
    HRESULT: 0x8007007f
    Description of HRESULT There is a problem with the resource you are looking for, so it cannot be displayed.

    Cause

    This problem occurs because the handler mapping for the requested resource points to a .dll file that cannot process the request.

    Resolution

    To resolve the problem, edit the handler mapping for the requested resource to point to the http error 500.0 internal server error file that can process the request. To do this, follow these steps:

    1. Click Start, click Run, type inetmgr.exe, and then click OK.
    2. In IIS Manager, expand <server name>, expand Web sites, and then click the Web site that you want to modify.
    3. In Features view, double-click Handler Mappings.
    4. Right-click the script verifying cg32 checksum error that you want to edit, and then click Edit.
    5. In the Edit Script Map dialog box, type the appropriate executable file in the Executable box, and then click OK.
      For example, .asp files should map to the %windir%\system32\inetsrv\asp.dll file.

More information

For any exception thrown from the web application code, check Application event log or your own Application log, for Exception Type, Exception Message, and Exception Call Stack. If further debugging is needed, use DebugDiag latest version to capture first chance exception dumps.

500 Internal Server Error Header Image

If you try to visit a website and see a “500 Internal Server Error” message, it means something has gone wrong with the website. This isn’t a problem with your browser, your computer, or your internet connection. It’s a problem with the site you’re trying to visit.

What A 500 Internal Server Error Means

RELATED:6 Types of Browser Errors While Loading Web Pages and What They Mean

This error may appear in a variety of different ways, http error 500.0 internal server error, but they all mean the same thing. Depending on the website, you may see the message  “500 Internal Server Error”, “500 Error”, “HTTP Error 500”, “500. That’s an error”, “Temporary Error (500)”, or just the error code “500”, http error 500.0 internal server error. It’s one of many different error messages you might see in your browser.

An Example of a 500 Internal Server Error on GitHub.

However you see this displayed, this is an error with HTTP status code 500. The 500 error code is a generic message that appears when something unexpected happened on the web server and the server can’t offer more specific information. Rather than giving you a normal web page, an error occurred on the web server and the server gave your browser a web page with an error message instead of a normal web page.

How to Fix a 500 Internal Server Error

This is a problem on the website’s end, so you can’t fix it yourself. Whoever runs the website will have to fix it.

However, there are often ways to quickly get around the problem. This error message is often temporary and the website may quickly fix itself. For example, many people may be connecting to the website at once, causing the problem. You may just need to wait a few minutes — or a few seconds — before trying again, and the website may work properly.

If you experience this problem, try reloading the web page. Click the “Reload” button on your browser’s toolbar or press F5. Your browser will contact the web server and ask for the page again, and this may fix your problem.

Note: You shouldn’t try reloading the page if you were submitting an online payment or initiating some type of transaction when you view this message. This may cause you to submit the same payment twice. Most websites should stop this from occurring, but a problem could occur if the website experiences a problem during a transaction.

Google <a href=yii error 404 Error. " width="650" height="350">

If this doesn’t work, you may need to wait a while before coming back http error 500.0 internal server error the website later. The website is probably experiencing a problem, http error 500.0 internal server error, and the people who run the website will have to fix it. Try accessing the website again in the future and partition magic error 1627 may work properly.

If you’re concerned that the people who run the website aren’t aware of the problem, you may want to contact them and inform them of the problem you’re experiencing. If the website is broken for you, it’s probably broken for other people, too — and the website’s owner http error 500.0 internal server error want to fix it.

For example, if you experience the error on a business’s website, you may want to dial that business’s phone number. If the business has a customer service email address, you may want to write an email to that address. You can also contact many businesses on social networks like Facebook and Twitter.

How to View an Older Copy of the Web Page

RELATED:How to Access a Web Page When It's Down

If you’re looking for a web page and it isn’t available at the moment — whether it’s due to HTTP error 500 or any other problem — you can view an older snapshot of the web page in several different ways. This won’t work if you’re trying to access a dynamic website or a web page with timely information (like breaking news), http error 500.0 internal server error, but it works very well for accessing older articles and other static pages.

For example, if you’re using Google, use you access a cached copy of the web page in Google Cache. Locate the web page you want to view in Google’s search results, click the arrow to the right of its address, and click “Cached” to view the old copy.

You may need to click the “Text-only version” link on the cache page to make the website load properly.

You could also load it up in a tool like the Wayback Machine to see older versions of the page.

If you’re a session fixation error writing lead in xbox owner and you’re experiencing this error on your server, there’s no single easy fix. There’s a problem with something, and it could be many things. Common problems include an error in your website’s .htaccess file, incorrect permissions on files and folders on your server, a software package that your website depends on not being installed, or a timeout when connecting to an external resource.

You’ll need to examine your web server’s log files and do more troubleshooting to determine the specific cause of the problem and its solution.

How to Fix a 500 Internal Server Error on Your WordPress Site

The dreaded 500 internal server error. It always seems to come at the most inopportune time and you’re suddenly left scrambling to figure out how to get your WordPress site back online. Trust us, we’ve all been there. Other errors that behave similarly that you might have also seen include the frightening error establishing a database connection and the dreaded white screen of death. But from the moment your site goes down, you’re losing visitors and customers. Not to mention it simply looks bad for your brand.

Today we’re going to dive into the 500 internal server error and walk you through some ways to get your site back online quickly. Read more below about what causes this error and what you can do to prevent it in the future.

500 Internal Server Error (Most Common Causes):

500 Internal server error in WordPress can be caused by many things. If you’re experiencing one, there’s a high chance one (or more) of the following elements is causing the issue:

  • Browser Cache.
  • Incorrect database login credentials.
  • Corrupted database.
  • Corrupted files in your WordPress installation.
  • Issues with your database server.
  • Corrupted WordPress core files.
  • Corrupted .htaccess file and PHP memory limit.
  • Issues with third-party plugins and themes.
  • PHP timing out or fatal PHP errors with third-party plugins.
  • Wrong file and folder permissions.
  • Exhausted PHP memory limit on your server
  • Corrupted or broken .htaccess file.
  • Errors in CGI and Perl script.

Check Out Our Ultimate Guide to Fixing the 500 Internal Server Error

What is a 500 Internal Server Error?

The Internet Engineering Task Force (IETF) defines the 500 Internal Server Error as:

The 500 (Internal Server Error) status code indicates that the server encountered an unexpected condition that prevented it from fulfilling the request.

When you visit a website your browser sends a request over to the server where the site is hosted. The server takes this request, processes it, and sends back the requested http error 500.0 internal server error (PHP, HTML, CSS, http error 500.0 internal server error, etc.) along with an HTTP header. The HTTP also includes what they call an HTTP status code. A status code is a way to notify you about the status of the request. It could be a 200 status code which means “Everything is OK” or a 500 status code which means something has gone wrong.

There are a lot of different types of 500 status error codes (500, 501, 502, 503, 504, etc.) and they all mean something different. In this case, a 500 internal server error indicates that the server encountered an unexpected condition that prevented it from fulfilling the request (RFC 7231, section 6.6.1).

500 internal server error in WordPress

500 Internal Server Error Variations

Due to the various web servers, operating systems, and browsers, a 500 internal server error can present itself in a number of different ways. But they are all communicating the same thing. Below are just a couple of the many different variations you might see on the web:

    • “500 Internal Server Error”
    • “HTTP 500”
    • “Internal Server Error”
    • “HTTP 500 – Internal Server Error”
    • “500 Error”
    • “HTTP Error 500”
    • “500 – Internal Server Error”
    • “500 Internal Server Error, http error 500.0 internal server error. Sorry something went wrong.”
    • “500. That’s an error. There was an error. Please try again later. That’s all we know.”
    • “The website cannot display the page – HTTP 500.”
    • “Is currently unable to handle this request. HTTP ERROR 500.”

You might also see this message accompanying it:

The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [email protected] and inform them of mssql error based sql injection time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log.

Internal Server Error

Other times, you might simply see a blank white screen. When dealing with 500 internal server errors, this is actually quite common in browsers like Firefox and Safari.

500 internal server error in Firefox

Bigger brands might even have their own custom 500 internal server error messages, such as this one from Airbnb.

Airbnb 500 internal server error

Here is another creative 500 server error example from the folks over at readme.

readme 500 internal server error

Even the mighty YouTube isn’t safe from canon pixma mp190 error e16 internal server errors.

500 internal server error on YouTube

If it’s an IIS 7.0 (Windows) or higher server, they have additional HTTP status codes to more closely indicate the cause of the 500 error:

  • 500.0 – Module or ISAPI error occurred.
  • 500.11 – Application is shutting down on the web server.
  • 500.12 – Application is busy restarting on the web server.
  • 500.13 – Web server is too busy.
  • 500.15 – Http error 500.0 internal server error requests for global.asax are not allowed.
  • 500.19 – Configuration data is invalid.
  • 500.21 – Module not recognized.
  • 500.22 – An ASP.NET httpModules configuration does not apply in Managed Pipeline mode.
  • 500.23 – An ASP.NET httpHandlers configuration does not apply in Managed Pipeline mode.
  • 500.24 – An ASP.NET impersonation configuration does not apply in Managed Pipeline mode.
  • 500.50 – A rewrite error occurred during RQ_BEGIN_REQUEST notification handling. A configuration or inbound rule execution error occurred.
  • 500.51 – A rewrite error occurred during GL_PRE_BEGIN_REQUEST notification handling. A global configuration or global rule execution error occurred.
  • 500.52 – A rewrite error occurred during RQ_SEND_RESPONSE notification handling. An outbound rule execution occurred.
  • 500.53 – A rewrite error occurred during RQ_RELEASE_REQUEST_STATE notification handling. An outbound rule execution error occurred. The rule is configured to be executed before the output user cache gets updated.
    500.100 – Internal ASP error.

500 Errors Impact http error 500.0 internal server error SEO

Unlike 503 errors, which are used for WordPress maintenance mode and tell Google to check back at a later time, a 500 error can have a negative impact on SEO if not fixed right away. If your site is only down for say 10 minutes and it’s being crawled consistently a lot of times the crawler will simply get the page delivered from cache. Or Google might not even have a chance to re-crawl it before it’s kx error selecting device up. In this scenario, you’re completely fine.

However, if the site is down for an extended period of time, say 6+ hours, then Google might see the 500 error as a site level issue that needs to be addressed. This could impact your rankings. If you’re worried about repeat 500 errors you should figure out why they are happening to begin with. Some of the solutions below can help.

How to Fix the 500 Internal Cmos checksym error Error

Where should you start troubleshooting when you http error 500.0 internal server error a 500 internal server error on your WordPress site? Sometimes you might not even know where to begin. Typically 500 errors are on the server itself, but from our experience, http error 500.0 internal server error, these errors originate from two things, the first is user error (client-side issue), and the second is that there is a problem with the server. So we’ll dive into a little of both.

Check out these common causes and ways to fix the 500 internal server error and get back up and running in no time.

1. Try Reloading the Page

This might seem a little obvious to some, but one of the easiest and first things you should try when encountering a 500 internal server error is to simply wait a minute or so and reload the page (F5 or Ctrl + F5). It could be that the host or server is simply overloaded and the site will come right back. While you’re waiting, you could also quickly try a different browser to rule that out as an issue.

Another thing you can do is to paste the website into downforeveryoneorjustme.com. This website will tell you if the site is down or if it’s a problem on your side. A tool like this checks the HTTP status code that is returned from the server. If it’s anything other than a 200 “Everything is OK” then it will return a down indication.

downforeveryoneorjustme

We’ve also noticed that sometimes this can occur immediately after you update a plugin or theme on your WordPress site. Typically this is on hosts that aren’t set up properly. What happens is they experience a temporary timeout right afterward. However, things usually resolve themselves in a couple http error 500.0 internal server error seconds and therefore refreshing is all you need to do.

2. Clear Your Browser Cache

Clearing your browser cache is always another good troubleshooting step before diving into deeper debugging on your site. Below are instructions on how to clear cache in the various browsers:

3. Check Your Server Logs

You should also take advantage of your error logs. If you’re a Kinsta client, you can easily see errors in the log viewer in the MyKinsta dashboard, http error 500.0 internal server error. This can help you quickly narrow down the issue, especially if it’s resulting from a plugin on your site.

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Check error logs for 500 internal server errors

If your host doesn’t have a logging tool, you can also enable WordPress debugging mode by adding the following code to your wp-config.php file to enable logging:

The logs are typically located in the /wp-content directory. Others, like here at Kinsta might have a dedicated folder called “logs”.

WordPress error logs folder (SFTP)

You can also check the log files in Apache and Nginx, which are commonly located here:

  • Apache: /var/log/apache2/error.log
  • Nginx: /var/log/nginx/error.log

If you’re a Kinsta client you can also take advantage of our analytics tool to get a breakdown of the total number of 500 errors and see how often and when they are occurring. This can help you troubleshoot if this is an ongoing issue, or perhaps something that has resolved itself.

Response analysis 500 error breakdown

If the 500 error is displaying because of a fatal PHP error, you can also try enabling PHP error reporting. Simply add the following code to the file throwing the error. Typically you can narrow down the file in the console tab of Google Chrome DevTools.

And you might need to also modify your php.ini file with the following:

4. Error Establishing a Database Connection

500 internal server errors can also occur from a database connection error. Depending upon your browser you might see different errors. But both will generate a 500 HTTP status code regardless in your server logs.

Below is an example of what an “error establishing a database connection” message looks like your browser. The entire page is blank because no data can be retrieved to render the page, as the connection http error 500.0 internal server error not working properly. Not only does this break the front-end of your site, but it will also prevent you from accessing your WordPress dashboard.

Example of error establishing a database connection

So why exactly does this happen? Well, here are a few common reasons below.

  • The most common issue is that your database login credentials are incorrect. Your WordPress site uses separate login information to connect to its MySQL database.
  • Your WordPress database is corrupted. With so http error 500.0 internal server error moving parts with themes, plugins, and users constantly deleting and installing them, sometimes databases get corrupted. This can be due to a missing or individually corrupted table, or perhaps some information was deleted by accident.
  • You may have corrupt files in your WordPress installation. This can even happen sometimes due to hackers.
  • Issues with your database server. A number of things could be wrong on socket error 11001 delphi web hosts end, such as the database being overloaded from a traffic spike or unresponsive from too many concurrent connections, http error 500.0 internal server error. This is actually quite common with shared hosts as they are utilizing the same resources for a lot of users on the same servers.

Check out our in-depth post on how to fix the error establishing a database connection in WordPress.

5. Check Your Plugins and Themes

Third-party plugins and themes can easily cause 500 internal server errors. We’ve seen all types cause them here at Kinsta, from slider plugins to ad rotator plugins. A lot of times you should see the error immediately after installing something new or running an update. This is one reason why we always recommend utilizing a staging environment for updates or at least running updates one by one. Otherwise, if you encounter a 500 internal server error you’re suddenly scrambling to figure out which one caused it.

A few ways you can troubleshoot this is by deactivating all your plugins. Remember, you won’t lose any data if you simply deactivate a plugin. If you can still access your admin, a quick way to do this is to browse to “Plugins” and select “Deactivate” from the bulk actions menu. This will disable all of your plugins.

Deactivate all plugins

If this fixes the issue you’ll need to find the culprit. Start activating them one by one, reloading the site after each activation. When you see the 500 internal server error return, you’ve found the misbehaving plugin. You can then reach out to the plugin developer for help or post a support ticket in the WordPress repository.

If you can’t login to WordPress admin you can FTP into your server and rename your plugins folder to something like plugins_old. Then check your site again. If it works, then you will need to test each plugin one by one. Rename your plugin folder back to “plugins” and then rename each plugin folder inside of if it, one by one, until you find it. You could http error 500.0 internal server error try to replicate this on a staging site first.

Rename plugin folder

Always makes sure your http error 500.0 internal server error, themes, and WordPress core are up to date. And check to ensure you are running a supported version of PHP. If it turns out to be a conflict with bad code in a plugin, you might need to bring in a WordPress developer to fix the issue.

6. Reinstall WordPress Core

Sometimes WordPress core files can get corrupted, especially on older sites. It’s actually quite easy to re-upload just the core of WordPress without impacting your plugins or themes. We have an in-depth guide with 5 different ways to reinstall WordPress. And of course, make sure to take a backup before proceeding, http error 500.0 internal server error. Skip to one of the sections below:

7. Permissions Error

A permissions error with a file or folder on your server can also cause a 500 internal server error to occur. Here are some typical recommendations for permissions when it comes to file and folder permissions in WordPress:

  • All files should be 644 (-rw-r–r–) or 640.
  • All directories should be 755 (drwxr-xr-x) or 750.
  • No directories should ever be given 777, even upload directories.
  • Hardening: wp-config.php could also be set to 440 or 400 to prevent other users on the server from reading it.

See the WordPress Codex article on changing file permissions for a more in-depth explanation.

You can easily see your file permissions with an FTP client (as seen below). You could also reach out to your WordPress host support team and ask them to quickly GREP file permissions on your folders and files to ensure they’re setup properly.

500 internal privoxy error mac permissions SFTP" width="1279" height="808">

8. PHP Memory Limit

A 500 internal server error could also be caused by exhausting the PHP memory limit on your server. You could try increasing the limit. Follow the instructions below on how to change this limit in cPanel, Apache, http error 500.0 internal server error, your php.ini file, and file.

Increase PHP Memory Limit in cPanel

If you’re running on a host that uses cPanel, you can easily change this from the UI. Under Software click on “Select PHP Version.”

Select PHP version

Click on “Switch to PHP Options.”

Switch to PHP options

You can then click on the attribute and change its value. Then click on “Save.”

Increase PHP memory limit in cPanel

Increase PHP Memory Limit in Apache

The file is a special hidden file that contains various settings you can use to modify the server behavior, right down to a directory specific level. First login to your site via FTP or SSH, take a look at your root directory and see if there is a file there.

.htaccess file

If there is you can edit that file to add the necessary code for increasing the PHP memory limit. Most likely it is set at 64M or below, http error 500.0 internal server error, you can try increasing this value.

Increase PHP Memory Limit in php.ini File

If the above doesn’t work for you might try editing your file. Log in to your site via FTP or SSH, go to your site’s active desktop recovery regedit script error directory and open or create a file.

php.ini file

If the file was already there, search for the three settings and modify them if necessary. If you just created the file, or the settings are nowhere to be found you can paste the code below. You can modify of course the values to meet your needs.

Some shared hosts might also require that you add the suPHP directive in your file for the above file settings to work. To do this, edit your file, also located at the root of your site, and add the following code towards the top of the file:

If the above didn’t work for you, it could be that your host has the global settings locked down and instead have it configured to utilize files. To edit your file, login to your site via FTP or SSH, go to your site’s root directory and open or create a file. You can then paste in the following code:

Increase PHP Memory Limit in wp-config.php

The last option is not one we are fans of, but if all else fails you can give it a go. First, log in to your site via FTP or SSH, and locate your wp-config.php file, http error 500.0 internal server error, which is typically in the root of your site.

wp-config.php file

Add the following code to the top of your file:

You can also ask your host if you’re running into memory limit issues. We utilize the Kinsta APM tool and other troubleshooting methods here at Kinsta to help clients narrow down what plugin, query, or script might be exhausting the limit. You can also use your own custom New Relic key from your own license.

Debugging with New Relic

9. Problem With Your .htaccess File

Kinsta only uses Nginx, but if you’re using a WordPress host that is running Apache, it could very well be that your file has a problem or has become corrupted. Follow the steps below to recreate a new one from scratch.

First, log in to your site via FTP or SSH, and rename your file to .

Rename .htaccess file

Normally to recreate this file you can simply re-save your permalinks in WordPress. However, if you’re in the middle of a 500 internal server error you most likely can’t access your WordPress admin, so this isn’t an option. Therefore you can create a new file and input the following contents. Then upload it to your server.

See the WordPress Codex for more examples, such as a default file for multisite.

10. Coding or Syntax Errors in Your CGI/Perl Script

500 errors being caused by errors in CGI and Perl is a lot less common than it used to be. Although it’s still worth mentioning, especially for those using cPanel where there are a lot of one-click CGI scripts still being used. As AEM on Stack Overflow says:

CGI has been replaced by a vast variety of web programming technologies, including PHP, various Apache extensions like mod_perl, Java of various flavors and frameworks including Java EE, Struts, Spring, etc, Python-based frameworks like Django, Ruby on Rails and many other Ruby frameworks, and various Microsoft technologies.

Here are a few tips when working with CGI scripts:

  • When editing, always used a plain text editor, http error 500.0 internal server error, such as Atom, Sublime, http error 500.0 internal server error, or Notepad++. This ensures they remain in ASCII format.
  • Ensure correct permissions of chmod 755 are used on CGI scripts and directories.
  • Upload your CGI scripts device setup error code 25057 daemon tools ASCII mode (which you can select in your FTP editor) into the cgi-bin directory on your server.
  • Confirm that the Perl modules you require for your script are installed and supported.

11. Server Issue (Check With Your Host)

Finally, because 500 internal server errors can also occur from PHP timing out or fatal PHP errors with third-party plugins, http error 500.0 internal server error, you can always check with your WordPress host. Sometimes these errors can be difficult to troubleshoot without an expert. Here are just a few common examples of some errors that trigger 500 HTTP status codes on the server that might have you scratching your head.

We monitor all client’s sites here at Kinsta and are automatically notified when these types of errors occur. This allows us to be pro-active and start fixing the issue right away. We also utilize LXD managed hosts and orchestrated LXC software containers for each site. This means that every WordPress site is housed in its own isolated container, which has all of the software resources required to run it (Linux, Nginx, PHP, MySQL). The resources are 100% private and are not shared with anyone else or even your own sites.

PHP timeouts could also occur from the lack of PHP workers, although typically these cause 504 errors, not 500 errors. These determine how many simultaneous requests your site can handle http error 500.0 internal server error a given time. To put it simply, each uncached request for your website is handled by a PHP Worker.

When PHP workers are already busy on a site, they start to build up a queue. Once you’ve reached your limit of PHP mysql error number 1045, the queue starts to push out older requests which could result in 500 errors or incomplete requests. Read our in-depth article about PHP workers.

Monitor Your Site

If you’re worried about these types of errors happening on your site in the future, you can also utilize a tool like updown.io to monitor and notify you immediately if they occur. It periodically sends an HTTP HEAD request to the URL of your choice. You can simply use your homepage. The tool allows you to set check frequencies of:

  • 15 seconds
  • 30 seconds
  • 1 minute
  • 2 minutes
  • 5 minutes
  • 10 minutes

It will send you an email if and when your site goes down. Here is an example below.

Email notification of 500 error

This can be especially useful if you’re trying to debug a faulty plugin or are on a shared host, who tend to overcrowd their servers. This can give you proof of how often your site might actually be doing down (even during the middle of the night). That’s why we always recommend going with a managed WordPress host. Make sure to check out our post that explores the top 9 reasons to choose managed WordPress hosting.

Summary

500 internal server errors are always frustrating, but hopefully, now you know a few additional ways to troubleshoot them to quickly get your site back up and running. Remember, typically these types of errors are caused by third-party plugins, fatal PHP errors, database connection issues, problems with your .htaccess file or PHP memory limits, and sometimes PHP timeouts.

Was there anything we missed? Perhaps you have another tip on troubleshooting 500 internal server errors. If so, let us know below in the comments.


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Are you seeing 500 internal server error in WordPress?

Internal server error is one of the most common WordPress errors. Since the error doesn’t give any other information, many beginners find it quite frustrating.

In this article, http error 500.0 internal server error, we will show you how to easily fix internal server error in WordPress.

How to fix internal server error in WordPress

What Causes Internal Server Error in WordPress?

Internal server error is not specific to WordPress. It can happen with any website running on a web server. Due to the generic nature of this error, it does not tell the developer anything.

Asking how to fix an internal server error is like asking your doctor how to fix the pain without telling them where the pain is.

Example of a WordPress website showing internal server error

Internal server error in WordPress is often caused by plugin or theme functions. Other possible causes of internal server runtime error 326 in WordPress that we know of are: corrupted .htaccess file and PHP memory limit.

We have also heard internal server error only showing up when you are trying to access the admin area while the rest of the site works fine.

That being said, now let’s take a look at how to go about troubleshooting the internal server error in WordPress.

Video Tutorial

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If you don’t like the video or need more instructions, then continue reading.

Checking for Corrupt .htaccess File

The first thing you should do when troubleshooting the internal server error in WordPress is check for the corrupted .htaccess file.

You can header error 404 so by renaming your main .htaccess file to something like .htaccess_old. To rename the .htaccess file, http error 500.0 internal server error, you will need to login to your site using FTP or File Manager app in your hosting account’s cPanel dashboard.

Once you connected, the .htaccess file will be located in the same directory where you will see folders like wp-content, wp-admin, and wp-includes.

Editing .htaccess file in WordPress

Once you have renamed the .htaccess file, try visiting your site to see if this solved the problem. If it did, then give yourself a pat on the back because you fixed the internal server error.

Before you move on with other things, make sure that you go to Settings » Permalinks page in WordPress admin area and click the save avg msi error 27037 without making any changes. This will generate a new .htaccess file for you with proper rewrite rules to ensure that your post pages do not return a 404 error.

If checking for the corrupt .htaccess file solution did not work for you, then you need to continue reading this article.

Increasing the PHP Memory Limit

Sometimes internal server error can happen if you http error 500.0 internal server error exhausting your PHP memory limit. Use our tutorial on how to increase PHP memory limit in WordPress to fix that.

If you are seeing the internal server error only when you try to login to your WordPress admin or uploading an image in your wp-admin, http error 500.0 internal server error, then you should increase the memory limit by following these steps:

  1. Create a blank text file called php.ini
  2. Paste this code in there: memory=64MB
  3. Save the file
  4. Upload it into your /wp-admin/ folder using FTP

Several users have said that doing the above fixed the admin side problem for them.

If increasing the memory limit fixed the problem for you, then you have only fixed the problem temporarily. You still need to find the cause that is exhausting your memory limit.

This could be a poorly coded plugin or even a theme function. We strongly recommend that you ask your WordPress web hosting company to look into the server logs to help you find the exact diagnostics.

If increasing the PHP memory limit did not fix the issue for you, then you are in for some more troubleshooting.

Deactivate all Plugins

If none of the above solutions worked for you, then this error is most likely being caused by a specific plugin. It is also possible that it is a combination of plugins that are not playing nice with each other.

Sadly, there is no easy way to find this out. You have to deactivate all WordPress plugins at once.

Follow the instructions in our guide on how to deactivate all WordPress plugins without WP-Admin.

Deactivate all WordPress plugins

If disabling all plugins fixed the error, then you know it is one of the plugins that is causing the error.

Simply go to the Street fighter 4 fatal error admin area and click on ‘Plugins’. Now you need to reactivate one plugin at a time until you find the one that caused the issue. Get rid of that plugin, and report http error 500.0 internal server error error to the plugin author.

Re-uploading Core Files

If the plugin option didn’t fix the internal server error, then it is worth re-uploading the wp-admin and wp-includes folder from a fresh WordPress install.

This will NOT remove any of your information, but it may solve the problem in case any file was corrupted.

First you will need to visit the WordPress.org website and click on the Download button.

Download WordPress

This will install WordPress zip file to your computer. You need to extract the zip file and inside it you will find a wordpress folder.

Next you need to connect to your WordPress website using an FTP client. Once connected go to the root folder of your website. It is the folder that has wp-admin, wp-includes, wp-content folders inside it.

In the left column open the WordPress folder on your computer. Now you need to select wp-includes and wp-admin folders and then right-click and select ‘Upload’.

Upload fresh WordPress files

Your FTP client will now transfer those folder to your server, http error 500.0 internal server error. It will ask you whether you would like to overwrite the files. Select ‘Overwrite’ and then select ‘Always use this action’.

Overwrite files

Your FTP client will now replace your older WordPress files with newer fresh copies. If your WordPress files were corrupted, then this step will fix the internal server error for you.

Ask your Hosting Provider

If all methods fail to fix internal server error on your website, then it is time to get some more help. Contact your web hosting support team and they will be able to check the server logs and locate the root cause of the error.

If you want to continue troubleshooting on your own, then see our ultimate WordPress troubleshooting guide for beginners.

We hope this article helped you fix the internal server error in WordPress. You may also want to see our complete list of the most common WordPress errors, and our beginners guide on troubleshooting WordPress.

If you liked this article, then please subscribe to our YouTube Channel for WordPress video tutorials. You can also find us on Twitter and Facebook.

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