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This article describes the issue when you receive the following error:
Unable to connect to the WSUS Server using the account: domain\admin. Request for principal permission failed.
Patch Manager version 188.8.131.525
This issue occurs because the FQDN and Canonical Name are not filled out completely for the WSUS server. It can also occur if the service account for Patch Manager doesn't have sufficient access to the WSUS server.
2nd Option: Elevate the service account (ewdgssvc-xxxx)
1. Go to Local Users and Groups
2. Go to ewdgssvc-xxxx and join in WSUS Administrator and Administrator Group
3. Save and Restart the EminentWare Data Grid Service
If the above steps have not resolved the issue, check the logs on the WSUS server to verify connectivity:
Note: If this is an Automation Server you may also need to add the local account created during the installation of the Automation Server role.