A certificate chain processed but terminated in a root certificate which is not trusted by the trust provider
This error means one (or both) of the following:
1) The WSUS signing certificate has not been distributed to the client(s) you are trying to deploy to.
2) The Windows Update Policy setting for ‘Allow signed content from an internal Microsoft update location’ has not been enabled.
The following guide covers configuration of the items above.
3rd Party and Locally Published Updates Admin Guide The EminentWare Extension Pack provides capabilities that allow you to create, publish, and manage 3rd party updates. This guide walks you through setting up and using this functionality.