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HTTP Error 500.0 - Internal Server Error Calling LoadLibraryEx on ISAPI filter "C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll" failed

Goals and Symptoms

Issue
When launching Web Applications in StruxureWare Power Monitoring 7 (SPM 7), the following HTTP error page shows up when trying to open http:\\servername\web

HTTP Error 500.0 - Internal Server Error
 
Calling LoadLibraryEx on ISAPI filter "C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll" failed

Facts and Changes

Environment

StruxureWare Power Monitoring 7

Causes and Fixes

Cause

The ISAPI path has an extra '\' character.


Resolution

1. Open Internet Information Services
2. Click on the computer name on the left list.
3. Double-click on ISAPI Filters
4. Modify the ASP.NET_4.0_32bit executable path to not include a double '\'

Example of correct path information:


5. Close IIS Manager and restart IIS from the command prompt (Start -> Run -> iisreset)


Legacy KB System (APS) Data: RESL210839 V1.0, Originally authored by MaTh on 03/02/2013, Last Edited by MaTh on 03/02/2013
Related ranges: Power Monitoring 7.0
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