Friday, November 18, 2011

The User Profile Service failed the logon. User profile cannot be loaded

We've been having a few problems with this error at work lately. Its very annoying as it doesn't affect all the users. It looks like its about to let you on and then kicks you straight back out again. After a lot of investigating we found serveral ways to fix this problem.

The first being the way Micosoft want you to fix it. They have a few soloutions on this webpage

They even provide you with a nice 'fix it' MSI file that you can roll out with group policy.

The second way to to delete certain files in the 'default' profile under your C:\USERS\ area. Its probably hidden so you will need to 'show hidden files or folders'

In the C:\Users\default profile you have the usual NTUser.dat and NYuser.dat.log file. You may find that there are other NTuser files with strange names. You need to delete these and just keep the original .dat files. Then give it a restart and it should work.'

Another option is to do a system restore. Now if you work in a domain environment you may have this turned off through group policy. If so that is not an option.

The last thing you can try is a complete re-image of the computer. This will obviously work, but takes the longest.

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