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How to enable 32-bit mode for IIS 7.5 and higher versions (IIS 8/Windows 2012), HTTP Error 500 Internal Server Error (Doc ID 1340948.1)

Last updated on APRIL 30, 2018

Applies to:

Siebel System Software - Version [21211] and later
Siebel CRM - Version [21211] and later
Information in this document applies to any platform.


Siebel is on a Windows 2008, Windows 2012 R2 64bit environment running IIS 7.5, IIS 8 or higher.
The Gateway and Siebel server is installed and running. The SWE also installed without any issues.
When login to IIS Manager and try to browse any of the created sites, getting the following error:

"HTTP Error 500.0 Internal Server Error

The page cannot be displayed because an internal server error has occurred."


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