How to Repair: LogonUI.exe Error on Windows 10 Boot/Startup

When you turn on your computer, the LogonUI.exe – Application Error message suddenly appears on the login screen, and you get stuck on the screen, forcing you to shut down your computer to fix the error.

The LogonUI is the Windows program responsible for the login screen interface, but if there is a problem with the LogonUI.exe file, you will get an error and you will not be able to start Windows.

So, without wasting any time, let’s see how to fix the Logonui.exe system error on startup with the following troubleshooting guide.

What causes a LogonUI.exe error during BOOT/Startup?

The LogonUI is the Windows program that is responsible for the interface you see on the login screen. The error you get indicates that either the Logonui.exe file itself is corrupt, or another program has interfered and is causing LogonUI to produce these results.

How to troubleshoot the LogonUI.exe error in BOOT/Startup?

Launch SFC and DISM scans

  1. Press the Windows + X key and select Command Prompt (Admin) from the menu.
  2. If the command line is not available, you can select PowerShell (Admin) instead.
  3. When the command prompt opens, type sfc /scannow and press Enter to start.
  4. The scanning process will now begin. This process may take about 10 minutes, so do not interrupt it.

Reinstall the video card driver

  1. If Windows can’t start normally, start it in Safe Mode.
  2. Now open the Device Manager and find your video card. Right-click on it and select Uninstall Device.
  3. A confirmation dialog box will appear. Enable the Uninstall driver software for this device and click the Uninstall button.

Perform the system restore

  1. Press the Windows + S key and invoke System Restore. Select the Create Restore Point option from the menu.
  2. The System Properties window opens. Click the System Restore button.
  3. The System Restore window opens. Click Next.
  4. You should now see a list of all available restore points. If available, activate the Show other restore points option.
  5. Select the desired restore point and click Next to continue.
  6. Follow the on-screen instructions to complete the recovery process.

Reset Windows 10 settings

  1. Reboot your computer several times during the boot sequence.
  2. Select Troubleshooting -> Reset this PC- > Delete All.
  3. To proceed to the next step, you may be prompted to insert the Windows 10 installation media, so have it ready.
  4. Select your version of Windows and select Only drive where Windows is installed -> Delete my files only.
  5. You should now see a list of changes made as a result of the reset. Click the Reset button to start the process.
  6. Now follow the instructions on the screen to complete the Windows 10 reset.

Frequently Asked Questions

  1. Press CTRL+ALT+Del to open Task Manager.
  2. If you find that logonui.exe is outside the specified c:{windows\system32 directory, you need to run a virus scan to get rid of the malware.

LogonUI.exe is the Windows program that is responsible for the interface you see on the login screen. It allows you to start the PC only after the user enters the correct password and account username associated with the welcome interface.

  1. Open the Start menu and click on the Power icon.
  2. Now hold down the Shift key and select Reboot from the menu.
  3. Now select Advanced Options -> Startup Options. Click the Restart button.
  4. When the PC restarts, you will be presented with a list of options.

The LogonUI is the Windows program that is responsible for the interface you see on the login screen. The error message you get indicates that the Logonui.exe file itself has been corrupted or that another program has interfered and caused LogonUI to produce these results.