Problem:
After installing 9.5 SP2 the web console returns a generic "500 - Internal server error"
Cause:
Potentially the SP2 install failed and was restarted. This resulted in additional lines being added to the C:\inetpub\wwwroot\LANDesk\LDMS\web.config file.
Resolution:
Replace the web.config with the attached file. Be sure to change the CORENAME in the <appSettings> section. That should be the only change needed.
or compare the attached file to your existing web.config with BeyondCompare or similar program.