How to solve this error? the trust relation between this workstation and the primary domain failed?

Log on locally as a local administrator. In the Network tool of Control Panel, select Change and enter a Workgroup name, leaving the domain. Restart the computer and log on locally as a local administrator. There are two methods to rejoin the domain:

• You can join the domain from the client if at the same time you can provide an administrator username and password on the domain. -or-
• You can delete the existing computer account in Server Manager, recreate the computer account, synchronize the domain, and then on the client rejoin the domain.

Rejoin the workstation to domain.