Domain-joined PC says trust relationship failed

Minimal guidance for messy support realities.

Scenario

A workstation on the domain suddenly cannot log in with domain credentials and reports a trust relationship error.

Recommended Resolution Path

  1. Log in with a cached local admin account.
  2. Test secure channel repair with PowerShell or unjoin/rejoin the device to the domain.
  3. Check whether the computer account was reset or duplicated in Active Directory.
  4. Verify time sync and DNS before rejoining the workstation.

Technician Notes

Confirm the business impact, document the root cause, and capture any preventative follow-up in the PSA or client knowledge base.