The User Profile Service failed the logon
When you log on to a Windows-based computer like Windows Vista/7/8/10/11, you may receive the following error message:
"The User Profile Service Service failed the logon. User Profile cannot be loaded"
In general, this may be caused by a temporary profile. Also, Windows might not read your user profile correctly.
Fixed: user profile service failed the logon windows 10
That Windows might not read your user profile correctly is one of the reasons why you receive error message: user profile service service failed the logon Windows 10. Thus, you can try to restart your computer and log on with your user account again. If this does not work, you can try following methods and find one work for you.
Use Windows 10 safe mode
Part 1: Start computer in safe mode
Step 1: Restart your computer several times, then you will automatically access Automatic Repair window.
Step 2: Click on Advanced options, Troubleshoot, Startup Settings after you access Automatic Repair window, then select Restart.
Step 3: Select Safe mode from a list of options.
Part 2: Enable Built-in administrator
Step 1: Press Windows key and type command prompt in the search box, then run as administrator.
Step 2: Type the following command and hit Enter.
net user administrator /active: yes (Check for the spaces)
Step 3: Log off from the current user, then log on to the enabled administrator account.
Note: After the troubleshooting is done, you can follow steps above and type the following command to disable admin account.
net user administrator /active: no
Use Windows 10 Registry Editor
To edit the registry you'll have to sign in as a different user, but if you have only one user account, you can also use Safe Mode to edit the registry.
Part 1: Check the status of user profile service
Step 1: Press Windows + R to summon Run window, then type Services.msc and press OK.
Step 2: Search for User Profile Service, right click on it and start the service.
Step 3: Select Automatic from the drop-down menu of the Startup type.
Step 4: Check if you are able to log-in.
Part 2: Check the Registry settings
In general, the Default profile key can be %SystemDrive%UsersDefault. However, if you upgraded your computer from a previous version, this may be changed automatically. To fix this problem, you need to manually check and change a few registry settings.
Step 1: Press Win + R to summon Run window, then type regedit.exe and press OK.
Step 2: Go to the following key in the left pane of Registry Editor.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\ CurrentVersion\ ProfileList
Step 3: Search the Default string and change it to %SystemDrive%UsersDefault.
Step 4: Close Registry Editor and try to log on with your user account again.
Part 3: Change the Registry
Sometimes, your account might get corrupted. And a corrupted account can prevent you from accessing Windows 10. To fix it, you can modify your registry.
Step 1: Open Registry Editor, then find the following registry subkey and folders began with S-1-5 (SID key) followed by a long number.
Step 2: Click each S-1-5 folder, double-click the ProfileImagePath entry in the details pane and find out which is the user account profile with the error.
Rename the .bak folder, if you have two folders starting with S-1-5 followed by some long numbers and one of them ended with .bak.
1. Right-click the folder without .bak and click Rename. Then, type .ba and press ENTER.
2. Right-click the folder that is named .bak and click Rename. Then, remove .bak at the end of the folder name and press ENTER.
3. Right-click the folder that is named .ba and click Rename. Then, change the .ba to .bak at the end of the folder name and press ENTER.
If you have only one folder starting with S-1-5 followed by long numbers which ends with .bak. Right-click the folder and click Rename. Then, remove .bak at the end of the folder name and press ENTER.
Step 3: Click the folder without .bak in the details pane, double-click RefCount and type 0.
Step 4: Click the folder without .bak, in the details pane, double-click State, type 0.
Step 5: Close Registry Editor and restart your computer, then check if you can log on with your user account.
Part 4: Delete the SID and create a new profile
Delete user profile via Computer Properties
Step 1: Type View advanced system settings and select it.
Step 2: Click the Advanced tab in the System Properties dialog box, then click Settings in the User Profiles area.
Step 3: Select the profile that you want to delete in the User Profiles dialog box, then click Delete.
Delete SID and create a new profile
Step 1: Open Registry Editor, find the following registry subkey. Then, right-click the SID that you want to remove and click Delete.
Step 2: Log on to the computer and create a new profile.
How to protect your computer
After you get the solutions to user profile service service failed the logon Windows 10, you may be aware that you need to create a backup for your computer. Once you modify the registry, there is a risk of system instability and crashes.
To ensure the security of your computer, you can use Backup and Restore software to create a system backup for your computer and save it to a safe place.
Step 1: Download AOMEI Backupper, install and launch it.
Step 2: Click Backup and System Backup.
Step 3: Select your Destination Partition and click Start Backup after you confirm all settings.
Note: AOMEI Backupper will automatically select C drive as Source Partition. It will include all thing concerned to your computer and boot files. Thus, there is no need to worry about that you will leave out something concerned to your computer and boot files.
To fix the user profile service failed the logon windows 10, you can try one or more solutions above. However, there is a risk of system instability and crashes when you execute some operations. Thus, you need to create a system backup for your computer ahead of time.
I recommend you Backup and Restore software AOMEI Backup. With it, you can create system backup with a few clicks. And you do not need a professional skill. What’s more, you can enjoy more advanced features, such as backup windows 10 to external hard drive, backup windows 10 to cloud, backup windows 10 to NAS, Differential or Incremental Backup, etc. Also, you can restore system image backup if something unexpected happens.