User Profiles on Servers

Run regedit (this edits the registry)

Go to KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList there is a list of SIDs here. 

These security IDs are what links the user account to the profile. Each user account has a SID. Click on the SIDs and you will see a ProfileImagePath key in the right hand key. Use this to figure out the effected profile. 

It will say something like %SystemDrive%\Users\username write this down you will need it later. Once you know which user account the SID is for. 

Delete the SID from the profile list hive (just right click on it and hit delete). Now restart and log on as the user you couldn't log in as. It will create a new profile all your settings will be gone. Log off and log back on as a local admin. 

Go back to regedit and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList again. 

This was repopulated when you logged back on. Now select profile image path and set it back to what it was originally. See if you can log back in as the user."