The trust relationship between this workstation and the primary domain failed

If you have an active directory environment, and when trying to login to your active directory workstation (not domain controller), you get the error:

"The trust relationship between this workstation and the primary domain failed"

You will need to re-authenticate and update any tokens on the workstation. This is easily done by logging into the workstation as the local administrator (./Administrator) and then running:

Reset-ComputerMachinePassword -Server domaincontroller -Credential Administrator

Re-enter the administrator password when prompted.

If the command 'Test-ComputerSecureChannel' is coming back false you could run

Test-ComputerSecureChannel -Repair -Credential administrator