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How do I fix logonui.exe - application error on Windows 10?


New member
Apr 22, 2016
How do I fix logonui.exe - application error on Windows 10

Hey guys,
I have get a Toshiba satellite pro c850 using Windows 10. Randomly after a restart of my computer it went to a green screen with the loading dots spinning, and a box saying:

LogonUI.exe - Application error
The exception breakpoint
A breakpoint has been reached.
(0x80000003) occurred in the application at location 0x00007FFD380413AF.
Click on OK to terminate the program

I tried Ctrl alt del saying that:
Runtime error!
Program: C:\WINDOWS\system32\LogonUI.exe

This application has requested the Runtime to terminate it in an unusual way.

I press Ctrl alt esc and the box disappears but the loading dots still spinning.

I can't do anything else than that. Please help.


New member
Aug 2, 2015
Re: How do I fix logonui.exe - application error on Windows 10

Random issues are very hard to pinpoint.

Could be a driver issue. If you get it to boot up properly. Try running CHKDSK, SFC, and DISM fixes. Do all Windows Updates. Also check with Toshiba for all your drivers and get the Window 10 drivers for your specific model. Try uninstalling your antivirus/antispyware/internet security software.

Could be unstable OS. Back up your date and try a refresh. Otherwise a full restore would definitely ensure Windows is fully loaded and clean state.

You could have failing hardware, Mobo, RAM, HDD/SSD or all the above. Get some free hardware diag tools and run it overnight.


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