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LogonUI.exe System Application Error: How to Fix & Main Cause

Encompassing solutions that will surely fix this frustrating issue

10 min. read

Updated onSeptember 27, 2024

updated onSeptember 27, 2024

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Many users reportedLogonUI.exe System Erroron their PCs, and the problem is usually caused by issues with your graphics card. To know this for sure, you need to disable the graphics card in Safe Mode. This may also causeException_Illegal_Instruction.

How do I fix the LogonUI.exe application error?

1. Disable your graphics card in Safe Mode

TheLogonUI.exe system Errorcan appear due to your graphics card. Your drivers can be the problem and cause this error message to appear.

If you cannot boot your PC normally, you should enable Safe Mode, as shown above.

2. Disable the fingerprint scanner

Several users have reported that the fingerprint scanner can causeLogonUI.exe System Errorto appear. You need to enter Safe Mode and disable your fingerprint reader to fix this problem.

After doing that, the problem should disappear, and you can access Windows without any issues.

We have to mention that you can also fix this problem simply by updating your fingerprint software and driver. To do that, visit your fingerprint manufacturer’s website and download the latest fingerprint software or driver.

3. Disable Micro Focus Password Self-Service

Users reported thatLogonUI.exe System Errorcould appear due to the Micro Focus Password Self Service login extension. If you have this extension installed, remove it and check if that solves the problem.

It’s rather likely that Micro Focus has a new version of their software available, so if you want to continue using it, update it and check if that solves the problem.

PIN login is a simple way to protect your PC from unauthorized access, but sometimes problems can occur. Users reported thatLogonUI.exe System Erroris related to PIN login, and if you want to fix it, you need to disable it.

5. Perform SFC and DISM scan

LogonUI.exe System Errorcan sometimes appear due to corrupted system files. However, you can easily fix this problem simply by performing an SFC scan.

If the SFC scan can’t run or if it can’t fix the problem, you need to use the DISM scan instead. After the DISM run successfully, you can now repeat the SFC scan.

6. Remove the Sensible Vision FastAccess application

According to users, the issue was caused by the Sensible Vision FastAccess application. You need to find and remove this application from your PC to fix the problem.

If you cannot boot into your PC normally, you should enable Safe Mode, as shown in Solution 1.

7. UseCtrl+Alt+Delshortcut

If you can’t log in to Windows due toLogonUI.exe System Error, you might be able to solve it simply by using a single keyboard shortcut.

A few users reported that they fixed the problem simply by pressingCtrl+Alt+Delshortcut for 10 seconds. We have to mention that this might not be a permanent solution, so you’ll have to repeat it every time this error appears.

8. Use integrated graphics

According to users,LogonUI.exe System Errorcan appear due to your dedicated graphics card. One way to fix this problem is to disconnect your laptop from the power source. By doing that, you’ll force it to use integrated graphics.

If you want a more reliable solution, change your settings and set your integrated graphics as the default display adapter. Keep in mind that by using integrated graphics, you might experience lower performance in video games.

9. Perform a clean boot

As we previously mentioned,LogonUI.exe System Errorcan be caused by third-party applications. To fix the issue, you need to disable all startup applications until you find the problematic one.

Once your PC restarts, start Windows normally and check if the problem still appears. If not, it means that one of the disabled applications or services is causing this problem.

To find out which application is the problem, you need to enable the apps in batches till you fix the faulty one.

10. Reinstall your graphics card driver

Sometimes, theLogonUI.exe System Errorcan be related to your graphics card driver. This is especially true for AMD beta drivers. To fix this, you need to uninstall and reinstall the driver. You can also find the latest driver versions with a dedicated app likePC HelpSoft Driver Updater, saving both time and effort.

If you want to remove your graphics card driver completely, you can do that withDisplay Driver Uninstaller. This is a freeware tool that will remove your driver and all files and registry entries associated with it.

After you remove the driver, you have to install it again. To do that, visit your graphics card manufacturer’s website and download the latest driver for your graphics card.

11. Perform a System Restore

You might be able to fixLogonUI.exe System Errorsimply by performing a System Restore. This useful feature can restore your system and remove any recent problems.

If you can’t start Windows normally due to this error, you might have to perform System Restore from Safe Mode. Alternatively, you can access Advanced Startup Options and perform System Restore. To do that, follow these steps:

After restoring your system, the problem should be resolved entirely.

12. Disable Anti-Aliasing for your graphics card

Many users use Anti-Aliasing while playing their favorite video games, but sometimes this feature can cause certain problems.

Several users reported that this feature caused LogonUI.exe System Error to appear. To fix the problem, you need to disable Anti-Aliasing, the FXAA feature.

After doing that, the problem should be resolved completely. We showed you how to disable Anti-Aliasing for Nvidia graphics cards, but if you have AMD graphics, you should be able to disable it fromCatalyst Control Center.

13. Uninstall CSR Wireless Stack software

Another third-party application that can cause the LogonUI.exe System Error is CSR Wireless Stack. If you have this application on your PC, remove it or update it to the latest version and check if that solves your issue.

14. Disable or uninstall your security software

According to users, yourantivirus softwarecan also causeLogonUI.exe System Errorto appear. You might have to temporarily disable your antivirus to fix the issue and check if that solves the problem.

If the issue persists, you might try temporarily removing your antivirus software.

It’s worth mentioning that antivirus tools tend to leave certain files and registry entries behind, even after you uninstall them. You’ll have to use adedicated removal toolto remove an antivirus tool from your PC completely.

15. Replace the problematic files

SometimesLogonUI.exe System Errorwill tell you which file is causing this problem. Copy that file from a working Windows PC to yourC:\Windows\System32directory to fix the issue.

Sometimes you might not be able to access your Windows, and if that’s the case, you’ll need to boot to Command Prompt and copy the problematic file to the System32 directory using the command line.

This is an advanced solution, and if you’re not careful, you can cause even more problems with your operating system, so be extra cautious.

16. Reset Windows 10

If other solutions can’t fix this problem, you might consider Windows 10 reset. This solution will remove all files from your system drive, so back them up beforehand.

In addition, you might also need aWindows 10 installation media, so be sure to create it using the Media Creation Tool.

LogonUI.exe System Errorcan cause many problems since it can prevent you from accessing Windows. However, you should be able to fix this problem simply by using one of our solutions.

There are other login errors you can encounter, and we wrote aboutresolving the Logon Balancing Error 88 in SAP GUIwith our expert solutions.

If you are facing other issues, likethe exception breakpoint has been reached, check our detailed guide to fix it quickly.

Feel free to let us know the solution that helped you fix this issue in the comments below.

LogonUI.exe System Application Error: How to Fix & Main Cause#

How do I fix the LogonUI.exe application error?#

1. Disable your graphics card in Safe Mode#

2. Disable the fingerprint scanner#

3. Disable Micro Focus Password Self-Service#

4. Disable PIN login#

5. Perform SFC and DISM scan#

6. Remove the Sensible Vision FastAccess application#

7. UseCtrl+Alt+Delshortcut#

8. Use integrated graphics#

9. Perform a clean boot#

10. Reinstall your graphics card driver#

11. Perform a System Restore#

12. Disable Anti-Aliasing for your graphics card#

13. Uninstall CSR Wireless Stack software#

14. Disable or uninstall your security software#

15. Replace the problematic files#

16. Reset Windows 10#