Symptom
When you log on to a computer that is running Windows 7 in a domain environment, you receive the following error message:
The trust relationship between this workstation and the primary domain failed.
Resolution
To resolve this issue, remove the computer from the domain, and then connect the computer to the domain.
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Use a local administrator account to log on to the computer.
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Select Start, press and hold (or right-click) Computer > Properties.
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Select Change settings next to the computer name.
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On the Computer Name tab, select Change.
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Under the Member of heading, select Workgroup, type a workgroup name, and then select OK.
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When you are prompted to restart the computer, select OK.
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On the Computer Name tab, select Change again.
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Under the Member of heading, select Domain, and then type the domain name.
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Select OK, and then type the credentials of the user who has permissions in the domain.
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When you are prompted to restart the computer, select OK.
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Restart the computer.
