IIS Error 0x80070021: Orchestrator 500 Error

How to resolve the error 500 is displayed post installing Orchestrator and no errors are present in the Event Viewer?

Error Description: Default install of Orchestrator opens with a Login 500 error but without logging any error in Event Viewer.


Troubleshooting Steps:
  1. Open site web.config and locate the following section:

  1. Modify the first line errorMode=”Custom” to “Detailed“ (ie: )
  2. Reset and reload site
  3. One possible error might be as following,

  1. Navigate to C:\Windows\System32\inetsrv\config\applicationHost.config and edit it
  2. Search for setting : and modify it to Allow (ie: )
  3. Reset IIS and reload site.