Windows 10 — Unable to sign in due to User Profile Service error

Vítor 6 Reputation points
2021-08-24T14:02:20.49+00:00

My computer has Windows 10 installed. Since yesterday, I have been unable to sign in to it.

Windows 10 starts normally up to the lock screen. Then, albeit there are several users on the computer, I'm only allowed to sign in with the last one that used the computer. When I insert the password for that user, the following error message appears:

The User Profile Service service failed the sign-in.

User profile cannot be loaded.

I'm able to reach the Troubleshoot screen through restarting the computer while holding the Shift key. From there, I have tried the following options.

  1. I booted into safe mode and safe mode with networking. In both occasions, the same problems happened.
  2. I booted into safe mode with command prompt. This time, the computer seemed to accept the password as I tried to sign in, and after a considerable waiting time a single command prompt window appeared but I still couldn't do anything else.
  3. I have tried to check my disks for errors by going to the command prompt option in Troubleshoot and using the chkdsk c: /f /r and chkdsk d: /f /r commands (for administrator privileges, I was prompted to insert the password of another account, the only one with such privileges on the computer, and it accepted it). Both times, nothing strange was found.
  4. In the same command prompt window, i tried the regedit command and a Registry Editor window appeared. I made my way to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList, where I could only see the S-1-5-18, S-1-5-19 and S-1-5-20 folders.

Thus, although I found several articles with instructions for what to do when encountering the The User Profile Service service failed the sign-in. User profile cannot be loaded error message, such as The IT Bros' and Tech Advisor's, I couldn't replicate the solutions they provide and I'm at a standstill.

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
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  1. Limitless Technology 39,391 Reputation points
    2021-08-25T09:49:49.663+00:00

    Hello,

    Thank you for your question.

    I would like suggest you below troubleshooting steps which may help you.

    1. Disconnect this computer from LAN.
    2. Enable builtin administrator account using below steps.

    enter into safe mode and enable built-in administrator and check with the status of User profile service.
    Step 1: Start computer in safe mode.

    Type Settings in the search box on the desktop, select Settings.

    Here select Change pc settings and then General.

    Scroll down to Advanced startup, click Restart now.

    Click on Troubleshoot, Advanced options, and Startup Settings.

    Click Restart, select Safe mode and then press Enter.

    Step 2: Enable Built-in administrator.

    Press Windows + X key together on your desktop screen.

    Click on Command Prompt (admin) to open Command Prompt.

    Type the following command and hit Enter:

    net user administrator /active: yes (Check for the spaces) 

             d.  Now log off from the current user and try to login to the administrator account that is enabled.

    If the reply was helpful, please don’t forget to upvote or accept as answer.

    Thanks,

    PRAKASH T

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