LogonUI.exe Application error on startup in Windows 10

On any normal day, you will find your system working well. It boots fine, and you can install desired apps normally. However, sometimes, it can behave unexpectedly. For example, you may see a pop-up with the following error message appearing on your screen when you wake up your computer.

LogonUI.exe – Application Error

The exception Breakpoint. A breakpoint has been reached. (0x80000003) occurred in the application location 0x00007FFC7F84C4D7.

LogonUI.exe Application Error

LogonUI.exe is a Windows program which is responsible for the interface you see on the login screen. It allows a PC to start only when a user enters the correct password and account username associated with the welcome interface. It is an important part of Windows, but often causes problems such as the one described above. The causative agent of this error is not single but multiple. For instance, the failure of the hard disk, the problems with the RAM modules, the faulty data cables, the power supply unit not able to supply proper voltage or current to the hard disks, corruption of the user profile, corruption of system files and more. Nevertheless, you can repair them all.

1] Run DISM to repair System Repair

The DISM tool may help you to fix some Windows corruption errors such as LogonUI.exe Application Error in Windows 10. So boot in Advanced Startup Options, access the Command Prompt and then Run DISM to repair Windows System Image. Alternatively, you may boot in Safe Mode access the command prompt and then run DISM.

2] Run Check Disk

Boot in Advanced Startup Options, and then access and open a command prompt and run the following command:

chkdsk /r

If the above solution fails to resolve the issue,  try the next solution.

3] Disable Graphic Card Adapter

The LogonUI error can also occur if there’s any temporary issue with your graphics adapter. To troubleshoot this error, try disabling the graphics adapter in Safe Mode, and then update and enable it normal mode.

4]  Troubleshoot in Clean Boot State

A Clean Boot is performed to start Windows by using a minimal set of drivers and startup programs. This process is beneficial in a way that it helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows 10. You may troubleshoot the problem by performing a Clean Boot.If nothing helps check the error log in Event Viewer and see if it gives you a direction to work on.

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The author Hemant Saxena is a post-graduate in bio-technology and has an immense interest in following Windows, Office and other technology developments. Quiet by nature, he is an avid Lacrosse player. Creating a System Restore Point first before installing a new software, and being careful about any third-party offers while installing freeware is recommended.