This just started on the 2008 AD server. After about 10 logons to the server this error occurs. "User Profile Service service failed the logon. No more threads can be created in the system". After a reboot no problem for about 10 logons.

Hi There is a useful article on this topic http://answers.microsoft.com/en-us/windows/forum/windows_vista-security/user-profile-service-service-failed-the-logon-user/4ed66b21-c23e-42f1-98b2-706dcf931fae If you are unsure of the instructions please come back here and post. Best Regards, Martin If you find my information useful, please rate it. :-)

Thanks for the reply, Martin A little more info to add. No account can logon, not administrator, backup admin, none. I think the second part of the error message is the key "No more threads can be created in the system". I am not having a lot of luck finding too many posts that contain the whole error message. And after a reboot it works as normal until so many logons.js

Hi, Based on my search of Microsoft Knowledge Base, this issue can be caused due to high resource compsumption. You may try to rebuild WMI repository with the following commands to fix this issue: Net Stop Winmgmt CD /D %Windir%\system32\wbem Ren Repository Repository.old Net Start Winmgmt Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, Based on my search of Microsoft Knowledge Base, this issue can be caused due to high resource compsumption. You may try to rebuild WMI repository with the following commands to fix this issue: Net Stop Winmgmt CD /D %Windir%\system32\wbem Ren Repository Repository.old Net Start Winmgmt Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.