Some times when logging into a Windows Domain there will be an error that the “The trust relationship between this workstation and the primary domain failed” and no domain user will be able to log into the domain.

The fix is to rejoin the workstation to the domain. If you break the domain relationship and then rejoin the domain. This can necessitate some reconfiguration of the users that have previously logged into the domain.

Not being able to log into the domain can be problematic for just logging into the workstation. Here are a couple possible solutions.

• Login as the local administrator .\Administrator the account has to be enabled and you must know the password
• Unplug the Ethernet cable and use the cached domain credentials. This can take a few minutes, be patient. I then enabled the local Administrator account and set a password, rebooted and logged in as local Administrator.

Use the Network ID button to re-add the workstation

My Computer → Properties → Advanced System Settings → Computer Name → Network ID

Follow prompts putting in the appropriate credentials and domain.