When user tries to open the CRM website after a new install on Windows Server, they often 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. The below steps help you to remove the HTTP Error 500.0 in Sage CRM: ●       From the Administrative tools menu, select IIS administration tools ●       Open ISAPI filters on the default webpage ●       Select the Edit menu from the drop-down menu ●       Next, you’re supposed to write down filter name and Executable pathFilter name: Sage AccpacUrlRedirector Executable: C:\\Program Files (x86)\\Common Files\\Sage\\Sage 300 ERP\\Tomcat\\Jakarta\\isapi_redirect.dll ●       After that, remove the same ●       Finally, check whether your CRM is working or not and then add the ISAPI filter back.