'FASTCGI process has failed frequently recently. Try the request again in a while

We have setup a Wordpress Website on IIS 10 which was working fine. But suddenly it stops working and i got this error

"FASTCGI process has failed frequently recently. Try the request again in a while"

Restarting IIS fixed this problem.

Anybody tell me why this issue has occurred and how we can fix this ?

Thanks

phpwordpressiisfastcgiiis-10


Solution 1:[1]

  1. Open command prompt as administrator and navigate to the php-cgi.exe folder.

  2. Execute any PHP file from your application to know the exact error. In my case, I created a simple phpinfo.php page and executed following command.

    C:\Program Files (x86)\PHP\v7.4.5>php-cgi.exe E:\Websites\mysite\phpinfo.php

  3. It showed me the exact error saying 'vcruntime140.dll is not compatible with this PHP build' & I have updated to 'Microsoft Visual C++ Redistributable for Visual Studio 2019'. You can download it from here.

  4. Once you identified and resolved the error(point 3), you need to restart IIS server and run your website. It will work as expected.

Solution 2:[2]

If you're running PHP 8 turn track_errors Off in php.ini . Track_errors have been deprecated since 7.2 and can cause a fatal error in IIS

Solution 3:[3]

Finally, i found the solution to the issue, It is due to the low value given to "Rapid Fails PerMinute" - see above image posted by German Martin.

From Microsoft's website the default value for "Rapid Fails PerMinute" is 90 but i reduced it 10 and then the error "FASTCGI process has failed frequently recently...." started showing up.

Once i set it back to the default value of 90 , the error stopped. This is what worked for me, in my case.

Solution 4:[4]

You need to maximize "Instance MaxRequest" at FASTCGI Configuration. Just clic en IIS root -> FastCGI Settings, select you php-cgi.exe for WP and clic Edit. Then increise Instance MaxRequests

a busy cat [IIS FastCGI Settings]

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Karthick
Solution 2 Nkwaten
Solution 3 Medical Doctor - Programmer
Solution 4

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