Windows 10: User profile Service failed the sign in?

For some reason yesterday, i booted up windows 10 and everything was normal. When i signed out, i couldn't sign it back with the error that user profile service failed the sign in - When i tried signing in again it created a temp profile and was stuck on Preparing Windows. I didnt know it was a temp profile until loading explorer.exe through Task Manager. with CTRL+alt+del Checked event log and saw event 8198 exactly the day and time it happend., Is this okay? It tells me something about activation and my windows is activated.I use a msi laptop with a windows 10 pro.Sorry if the topic is

:)

 

The User Profile Service service failed the sign-in. User profile cannot be loaded.

Hello,

When attempting to login to my computer, I get the following message:

"The User Profile Service service failed the sign-in.

User profile cannot be loaded."

I referred to this Help article,You receive a "The User Profile Service failed the logon” error
message,

but the only difference is I only have one user profile on this computer. So, I can't login with another user to go through the steps listed in this post.

Any suggestions?

Thanks,

 

User Profile Service Service failed


Hello Manjunath, and welcome to Ten Forums.

See if you may be able to use OPTION FOUR in the tutorial below to enable the built-in Administrator account at boot.

https://www.tenforums.com/tutorials/2...a.html#option4

If so, then sign in to the built-in Administrator account to be able to do the steps in the tutorial below for this error.

User Profile Service failed the sign-in - Fix in Windows 8

 

User Profile Service Service failed! User profile cannot be loaded.

Brink:
I am using registry editor from command prompt. Drilled down to c:windows\system32\config inside the Load Hive dialog window. Have selected (checked box) the SAM file; clicking on Open opens error message that says:


SAM
This file is in use.
Enter a new name or close the file that's open in another program.

_______

I am at a loss, since I am not running any other program!

Any suggestions?

The SAM file is listed as being 64KB file size.