BQE Knowledgebase

HTTP Error 500.21

Problem: User is getting the following error:

HTTP Error 500.21 - Internal Server Error
handler "PageHandlerFactory-ISAPI-4.0_32bit" has a bad module "IsapiModule" in its module list

Cause: The error occurs because you have not installed all the required Internet Information Services (IIS) components.

Solution: To resolve this issue, go to the Control Panel > Programs and click 'Turn Windows Features on or off'. Make sure to select all the options and sub-options under the Internet Information Services module. 

windows features ao.png 

Note: See the KB article for details on how to add required components to IIS.

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Article Details

Last Updated
13th of April, 2017

ArchiOffice, EngineerOffice, Web Suite

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