The user profile service failed the logon error appears when you are trying to access to your Windows computer with a specific account. This error occurs because Windows can’t read your user profile in Windows OS.
The user profile files might be corrupted during a Windows update process or affected by viruses and malware. Sometimes, you also see this error in another form with another error message, such as “User profile cannot be loaded”.
Ways To Fix The User Profile Service Failed The Logon Error
There are several ways that you could apply to solve this problem, such as restore your computer to the previous working point, modify registry entries, or create a new user profile.
Solve User Profile Cannot Be Loaded Error In Safe Mode
The “User profile cannot be loaded” error, or also known as “User profile service failed the logon”, can be fixed by accessing to Safe Mode in your Windows computer and then restore Windows operating system (Windows OS) back to the previous working point.
However, this method is only working if “System Protection” is enabled on your Windows OS. You can’t restore your computer if this feature is disabled, because there is no backup to restore from.
1. First, restart your computer and keep pressing F8 key repeatedly, until the “Advanced Boot Menu” is displayed. Just select “Safe Mode with Networking” to access to your Windows computer in Safe Mode, with an Internet connection.
2. Once you have logged into your Windows computer in Safe Mode, click on Start > type “System Restore” or “rstrui.exe” > press Enter.
3. Stick on “Show more restore points”, and click the “Next” button.
4. Next, looking at the dates and select a nearest restore point, when your Windows computer was working fine. After that, click on the “Next” button and then “Finish” button.
5. The restore process will be started and your computer will automatically reboot. Once your computer has rebooted and the restore process is completed, login to your Windows computer in the normal mode, not Safe Mode anymore.
The issue is solved.
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Fix The User Profile Service Failed The Logon Error By Modify Registry Entries
You can also modify the registry to fix the login issue on your Windows computer. However, if you modify the registry incorrectly, serious issues might occur. So, make sure you follow our instructions carefully.
In order to solve this issue by modifying the registry, reboot your Windows computer, access to Safe Mode, and then follow the instruction below:
1. Click the Start button or press Windows key on your keyboard, and then type “regedit” in the search box, and press “Enter”.
2. The Registry Editor will open and show on your screen. In the Registry Editor window, go to this registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
3. In the left pane, find the folder that starts with SID key: S-1-5, but with a long random number.
4. Next, click on each S-1-5 folder, find the “ProfileImagePath” entry in the right pane, double-click on it to make sure that this is your Windows user account profile, which has the error.
If you have found two folders that begin with SID key (S-1-5) with the same random long numbers, but one of them ended with .bak. Then you need to rename the folder with .bak at the end and rename the folder without .bak to be .bak.
To do this, follow our instructions below:
A. You need to right-click the S-1-5 folder without .bak, click “Rename” and add an extra .ba at the end.
B. Next, right-click the S-1-5 folder, which is named .bak, and rename it by removing .bak at the end.
C. The last step, right-click the S-1-5 folder, which is named .ba (in the step #A above), and then rename it by changing .ba to .bak at the end.
If there is only one S-1-5 folder that comes with the long random numbers, but it comes with .bak at the end. Then you have to rename this folder and remove .bak at the end.
5. Click the S-1-5 folder without .bak and then double-click “RefCount” entry, and change “Value data” to be “0”.
6. Click the S-1-5 folder without .bak and then double-click “State” entry, and change “Value data” to be “0”.
7. Close Registry Editor and reboot your computer.
8. Now, you will be able to log on the computer with your account again.
We hope that two methods above will help you to solve the user profile service failed the logon error on your Windows computer.
If you have any question or other problems, send us an email and we will help you to figure out.