How to Fix "The User Profile Service failed the logon“ Error on Windows?

by Gabriel E. Hall - -
12

Question

Issue: How to Fix "The User Profile Service failed the logon“ Error on Windows?

I receive an error “The User Profile Service failed the logon” when trying to log in to my user account. I’m running Windows 10. Could you please help?

Solved Answer

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Windows users can use User Profile or Public Profile to access the desktop. Usually, home users have one, i.e. User Profile, which once opened provides access to applications, personal files (photos, documents, videos, etc.), settings, and so on. Unfortunately, but sometimes people cannot log on to their User Profile due to the error message that reads: “The User Profile Service failed the logon“, meaning that the access to the desktop and all data is denied. This issue might happen on all Windows versions (Windows 7, 8, 8.1, 10, Vista, XP), but a recent research has show that it prevails on Vista, 7, and 10 versions. According to Microsoft, “The User Profile Service failed the logon“ error may happen due to various reasons, such as a antivirus scan during the log on. No matter what the exact reason is in your case, there is a way to fix it. Here’s what you have to do:

How to fix “The User Profile Service failed the logon” error on Windows?

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To start with, try to restart your PC and log on to your User Profile one more time. If that did not work, then the following fixes should help you.

NOTE: To fix “The User Profile Service failed the logon”, it’s advisable to boot the system in Safe Mode and backup the registries. To boot in Safe Mode, you have to:

Windows 7 / Vista / XP

  1. Click Start and select Shutdown
  2. Then click Restart and OK
  3. When the Windows startup window shows up, press F8 until you see Advanced Boot Options window
  4. Click Safe Mode with Networking.

Windows 10 / Windows 8

  1. Click Power button and press Shift key
  2. Select Restart and the Troubleshoot
  3. Click Advanced options and select Startup Settings
  4. Finally, select Restart.
  5. When the system boots up, select Enable Safe Mode with Networking

Once done, you can move on with the “The User Profile Service failed the logon” fix. Be very careful because this method requires making changes on the Registries. Thus, make sure that you perform each step as explained below:

  • Click Start (or Win key), type regedit, and press Enter.
  • Once the Registry Editor is open, type HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList and press Enter.
  • Using the navigation pane on the left side, find a folder, which name starts with S-1-5 (SID key).
  • Open that folder by double clicking on it and find ProfileImagePath entry.
  • If you have noticed two S-1-5 folders followed by a long sequence of numbers, check if one of them ends with a suffix .bak.
  • If there is such an entry, you have to rename the folder that ends with the suffix .bak. For this purpose, you have to right-click on the folder without .bak ending and select Rename.
  • Type .ba and hit Enter.
  • The right-click on the folder with the .bak ending and select Rename.
  • Remove .bak suffix and press Enter.
  • Then go back to the folder .ba and select Rename. Change .ba to .bak, and press Enter.
  • In case you have found only one folder that ends with .bak, right-click on it, and select Rename.
  • Remove the suffix (.bak) and press Enter.
  • Now click on the that you have just renamed, click twice on the RegCount, type 0 value, and click OK.
  • After that, click the folder again, find State and double click on it.
  • Type  value 0 and press OK.
  • Close Registry Editor and Reboot your PC a

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About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate computer expert

Gabriel E. Hall is an expert troubleshooter who has been working in the information technology industry for years.

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