I am having difficulties getting the SQL Server extension to work with PHP on Windows Server. The installation went fine and I'm able to load phpinfo through the browser. However, when I enable php_sqlsrv_54_ts.dll, it throws a 500 - Internal server error. There are no errors logged to the PHP log.

Here are the steps I've performed:

Enabled extensions

Disabled extensions

System: Windows Server 2008 R2 Standard Edition SP1 x64

PHP: Version 5.4.10 (Thread Safety enabled)

Server API: CGI/FastCGI

Resources I've tried:

* I have not yet tried the Web Platform Installer as I've read that it may corrupt the IIS installation.


Turns out I had downloaded and installed VC9 x86 Thread Safe. After I removed it and tried VC9 x86 Non Thread Safe. I also needed to download SQL Server 2012 Native Client as it contains 11.0 drivers.

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