What if you start your computer and then while logging into your user account you get an error message “The user profile service service failed to logon”. This happens when your user profile can’t be loaded because of error in your profile. Let’s see how to correct this.


For this you need to log into another administrator account. If you don’t have any other administrator account then you have to log into the computer’s default administrator account.

safe mode

You can always log into the profile which is not loading in normal mode by going into safe mode. Press F8 and select “Safe mode”.


1. Now type “lusrmgr.msc” which opens local user users and groups.


2. Select “Users” which displays the list of the user accounts in your system.


3. Double click on “Administrator” to open its properties dialog box.


4.Remove the tick mark from “Account is disabled” check box.

5. Now you can set a password the default Administrator user.


6. Again right click on “Administrator” and click on “Set password”.


7. You will get a message then setting a new password will make you lose all the information for that user account. Since we have not set any password before we can click on “Proceed” button.


8. Now enter the password and confirm it.

9. Restart the computer and login using the default administrator account.

Now the next step is to open the registry editor and edit the profile.

1. Type “regedit” in the search box and open the registry editor program.

2. Go to “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList”

3. You will see S-15-21 and long numbers and the same exact numbers with .bak extension.

4. Now you need to change the numbers without .bak to .bak and with the one with .bak extension you have to remove the extension.


5. Right click the number with .bak extension and rename it to any other extension such as .ba only.

6. Again right click on the number without .bak extension and add .bak extension at the end.


7. Click the folder without .bak in the details pane, double-click RefCount, type 0, and then click OK.


8. Click the folder without .bak, in the details pane, double-click State, type 0, and then click OK.

9. Now close the registry editor.

10. Restart your computer and login with your own account.

You should be able to log into your profile.