When a client of a server that is joined to a Windows Domain loses the trust relationship to its object in Active Directory, you normally get this error message, when you try to login: The trust relationship between this workstation and the primary domain failed What you then normally do is to un-join the computer from the domain and join it again. The problem with with a Windows CA (Certificate Authority) Server is that you cannot un-join it from the domain. So that would mean you have to completely Read more [...]