Sage CRM: HTTP 500 when open CRM Website


When open CRM website after new install on Windows server, receive error:

HTTP Error 500.0 – Internal Server Error

Calling LoadLibraryEx on ISAPI filter “C:\Program Files (x86)\Common Files\Sage\Sage 300 ERP\Tomcat\Jakarta\isapi_redirect.dll” failed


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  1. Open IIS management console from Administrative tools
  2. Go to default website, open ISAPI filters
  3. Highlight SageAccpacUrlRedirector and select Edit
  4. Write down filter name and Executable pathFilter name:SageAccpacUrlRedirector

    Executable: C:\Program Files (x86)\Common Files\Sage\Sage 300 ERP\Tomcat\Jakarta\isapi_redirect.dll

  5. Remove it
  6. Test if CRM is working, then add the ISAPI filter back.