Here's the scenario, I've got a user with Windows 7 Professional on their computer. We start configuring a brand new system to replace their old computer that also has Windows 7 Professional. Once the new computer has been joined to the domain all of the sudden the user can no longer log in to the old computer - "trust relationship between workstation........" This has happened probably 10 times to us now and it takes an act of Congress to get back in to the old system in order to rejoin the domain. Has anyone else seen this? What could be causing this? It only happens when we join a Windows 7 computer to the domain that will be used by someone already using a Windows 7 machine. The computer names are different from each other. Thanks.

Hi, Please check if this article can help you to troubleshoot the issue: http://social.technet.microsoft.com/wiki/contents/articles/9157.trust-relationship-between-workstation-and-primary-domain-failed-en-us.aspx Furthermore, you can also try to delete the existing computer account in Server Manager or AD, recreate the computer account, synchronize the domain, and then on the client rejoin the domain. Regards, Leo Huang TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Leo Huang TechNet Community Support

Hi, Hows everything going? Please feel free to give me any update. Thank you for your cooperation. Regards, Leo Huang TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Leo Huang TechNet Community Support

Hi, As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as Answered as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish. BTW, wed love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts. Regards, Leo Huang TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Leo Huang TechNet Community Support