49880: Acronis MassTransit: HTTP Error 500.0 - Internal Server Error After Upgrading PHP

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Applies to: 

This article applies to:

  • Acronis MassTransit

Summary

Versions of PHP newer than 5.5.16 running on Windows require installing a particular version of the Microsoft Visual C++ Redistributable package.

Symptoms

  1. You have upgraded to PHP 5.5.16, 5.6.32, 7.x, or later
  2. When browsing to your MassTransit website, you get the following error:
    HTTP Error 500.0 - Internal Server Error - C:\php\php-cgi.exe - The FastCGI process exited unexpectedly

Cause

The appropriate DLL file installed by the Microsoft Visual C++ Redistributable package is missing.  
PHP 5.5.16 and 5.6.32 require the  MSVCR110.dll file installed by the Visual C++ Redistributable for Visual Studio 2012 Update 4 package.
PHP 7 requires the file MSVCR140.dll installed by the 
Microsoft Visual C++ 2015 Update 3 Redistributable package.

You can verify this by following these instructions:

  1. Open a command prompt (Start -> Run -> cmd)
  2. Navigate to the php directory by using the cd command.
  3. Type in the following command:
    php -v  

If you already have the necessary .dll, the version information will be displayed and if not, you will receive an error such as "This application has failed to start because MSVCR110.dll was not found. Re-installing the application may fix this problem."

Solution

PHP 5.5.16 and 5.6.32 require the MSVCR110.dll file be installed on the server. This .dll is available in the Microsoft Visual C++ Redistributable for Visual Studio 2012 Update 4 (you can download the update which includes it from here). You will need to install the 32-bit version (VSU_4\vcredist_x86.exe).”

PHP  7 requires the MSVCR140.dll file be installed on the server. This .dll is available in the Microsoft Visual C++ 2015 Update 3 Redistributable package. (you can download the update which includes it from here). You will need to download and install the 32-bit version (vc_redist.x86.exe).”

More information

Please contact Acronis Customer Central if you need assistance.

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