I recently installed FMS on to Windows Server 2011. I am getting the dreaded -

HTTP Error 500.0 - Internal Server Error

Calling LoadLibraryEx on ISAPI filter "C:\Program Files (x86)\FileMaker\FileMaker Server\Web Publishing\publishing-engine\web-server-support\iis\isapi_redirect.dll" failed

What I have found on the web for fixing this does not seem to work. Also, I have removed the installation, bonjour and all the folders and reinstalled, and it still does not work.

I also have Symantec on this server. The only way to get the Symantec to work is to change the DefaultAppPool / Enable 32bitApplications to False. But Filemaker publishing does not work under False or True.

The 2011 would be SBS or Home Server only, not the standard version of Windows that FMS is officially compatible with. So it could just be that it plain doesn't work...

I'm very sure you won't get official support from FMI on this setup so you may want to reconsider and go with standard Windows Server 2008...

What Wim said. Please stick to the officially tested and certified OS versions.

Steven