The computer's trust with the domain (secure channel)
What 'the trust relationship between this workstation and the primary domain failed' means and how to repair it with the least disruption.
- Level
- Intermediate
- Length
- About 35 minutes
- Contents
- 3 lessons · 1 video · final exam
- Status
- Published · updated 1 Oct 2026
Skills you'll practise
- Explain the computer account password and secure channel
- Test the secure channel with Test-ComputerSecureChannel and nltest /sc_verify
- Choose between repairing and rejoining, and verify the result
Course outline
- 1.The computer's trust with the domain (secure channel)Video · 5 min
- 2.Why a computer 'loses trust'Lesson · 12 min
- 3.Checking and repairing the secure channel from the command lineLesson · 13 min
- 4.Preventing trust failures: images, snapshots and stale computer accountsLesson · 12 min
- 5.The computer's trust with the domain (secure channel): knowledge checkKnowledge check · 18 questions
- 6.The computer's trust with the domain (secure channel): practical exerciseKnowledge check · 1 question
- 7.'The trust relationship failed' at sign-inScenario
- 8.Final exam6 questions · passing it completes the course, so people who already know the material can test out
Sources it draws on
The lessons and questions are written from these references, so learners can go back to the original.
- Microsoft Learn: Test-ComputerSecureChannel
- Microsoft Learn: Machine account password process
- Microsoft Learn: Troubleshoot errors when you join computers to a domain
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