If you have completed all eight steps and still see , it is time to open a ticket with SolarWinds Support. Gather the following first to expedite the process:
Provide the from your OrionWeb.log file. Share your SolarWinds Orion platform version number. solarwinds orion error 500
In IIS → AppPool → Advanced Settings: If you have completed all eight steps and
Verify read/write permissions for C:\ProgramData\SolarWinds\ . solarwinds orion error 500