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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. 1.The computer's trust with the domain (secure channel)Video · 5 min
  2. 2.Why a computer 'loses trust'Lesson · 12 min
  3. 3.Checking and repairing the secure channel from the command lineLesson · 13 min
  4. 4.Preventing trust failures: images, snapshots and stale computer accountsLesson · 12 min
  5. 5.The computer's trust with the domain (secure channel): knowledge checkKnowledge check · 18 questions
  6. 6.The computer's trust with the domain (secure channel): practical exerciseKnowledge check · 1 question
  7. 7.'The trust relationship failed' at sign-inScenario
  8. 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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