User Profile Service Failed the Login

So you did an update, installed some software, or maybe just have other issues.

“The User Profile Service failed the logon”

Get to REGEDIT somehow. Safe mode, Repair Computer, Rescue Disc, Install Disc

Get to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList

Find the account.

S-1-5-21-3322653407-4019819552-4144115548-1000
S-1-5-21-3322653407-4019819552-4144115548-1000.bak

Rename the first to .old
Delete .bak off the second
Rename the .old to .bak

Basically, reverse them.

Restart the computer.

You’re done!

We are not responsible for anything you do on your computer or any mistakes that you make attempting these walk-throughs. Proceed at your own risk. If you’re not sure about what you’re doing then we’re sure you should not be doing it. 🙂