Most likely a certificate issue. Can you try this please?
To check this, open the Certificates MMC snap-in:
1. Run mmc (e.g. from the Start menu)
2. File menu > Add/Remove Snap-in
3. Select "Certificates" in left pane and then click Add
4. Select "Computer Account" (for LocalMachine) then click Next, and then Finish
5. Navigate to the certificate and double-click in the right pane. On the General tab that comes up, you should see a little key icon at the bottom, along with the text, "You have a private key that corresponds to this certificate." If not, that's the problem. The private key was not saved.
If the private key is present, click Ok to dismiss this dialog, and then right-click on the certificate in the right pane and select on the pop-up menu: All Tasks > Manage Private Keys. In that dialog, make sure that the Windows account that the service runs under has read access to the private key. If it doesn't, that's the problem.
6. If the above does not work you can follow the steps in the KB linked below to have the Solarwinds-Orion Certificate recreated.
How to Recreate the Solarwinds-Orion certificate - SolarWinds Worldwide, LLC. Help and Support
