Let’s Fix LogonUI.exe Application Error With Ease

You may run into a LogonUI.exe error at the login screen of Windows. Many reasons can cause this error. In this article, we have mentioned the causes of LogonUI Exe error and its methods. If you are not sure about the cause of the LogonUI.exe error, you can try the below methods one by one to fix it.           

What is LogonUI.exe error?

In order to solve the problem, one must have information about that problem. Therefore, in this section, you will learn about LogonUI Exe error in brief to get a rough idea about this error. LogonUI.exe application error is the main component of Windows and develops a logon user interface that prevents you from logging in to your computer system. 

So, this error basically stops you from logging in to your account, which is the critical process to open your computer system. You can locate the file path of LogonUI.exe in C:\Windows\System32. In case you do not find the file in this path, but in some other drive, there is a possibility that it might be the virus that is pretending to be the file.

Some Windows users have a complaint about encountering this error at the login screen. The LogonUI.exe error message will prevent you from entering the computer system, and you won’t even click on any option. 

This is quite a frustrating situation while you are trying to complete your work on the computer. But no worries, because you will find the solutions to all the common reasons that cause this error in your computer system here.

Method 1: Run Ctrl + Alt + Del to fix LogonUI.exe error

The Ctrl + Alt + Del shortcut key allows you to stop the unresponsive application. You must try this shortcut key if you are encountering LogonUI Exe error. However, this is not the permanent solution because the error can appear again when you try to open your computer. 

This is the first and easiest method of solving this problem. In case you run into this error, the below-mentioned methods will help you in fixing this issue.

PS: if you face the Windows 10 error code 0xc0000098 or Windows 10 automatic repair loop issues, here are the top solutions.

Method 2: Remove Security Program for login

Some Sensible vision security programs also cause LogonUI Exe error. The facial expression security program might not support Windows 10, which is why you must remove such software from your computer system. In order to solve this error, you must uninstall such software in Safe Mode. Below are the steps that will help you to do so.

#1: Enter the ‘Safe Mode‘ window and press the Window + R key on your keyword to entreat the Run window. In the search box, type appwiz.cpl and hit the ‘Enter‘ key. This will allow you to see all the installed programs and their features.

Remove Security Program to Fix LogonUI.exe Application Error

#2: Right-click on FastAccess or any other security software and choose Uninstall

#3: Follow the computer’s instructions and finish the uninstall process. 

Now, restart your computer system to exit from Safe Mode and check whether the LogonUI.exe error persists. Some Windows users have also complained that LogonUI Exe error might also be related to PIN login.

Besides, if you wonder how to repair windows 10 without CD or how to fix the Atibtmon.exe Runtime Error on Windows 10, just click to read more.

Method 3: Remove Antivirus Software to fix LogonUI.exe error

External antivirus download can also trigger LogonUI Exe error in your PC. If there is no security software for login, consider uninstalling or disabling third-party antivirus from your operating system. Sometimes even an antivirus program hampers the system. After uninstalling the antivirus, restart your computer and check whether the error persists.

Also, here are the top fixes to solve the errors related to toaster.exe you should check out.

Method 4: Disable Graphic Card Adapter 

If your graphic card adapter is corrupted or damaged, it may cause a LogonUI.exe error on Windows 10. You need to remove or disable the graphic card adapter from your computer system to fix this issue. Not to mention you first need to enter Safe Mode. After that, follow the below guide to learn the process.

#1: Right-click on the ‘Start‘ button and choose ‘Device Manager.’

#2: Click and expand ‘Display adapter‘ and find your graphic card. 

#3: Right-click on your graphic card and select ‘Disable device.’

Didable Graphic Card Adapter

#4: In the new window, click on ‘Yes‘ to continue the disable process. 

After completing all these steps, restart your computer. If you can log in to your system, you can open Device Manager and enable the graphic card adapter.

Method 5: Run System File Checker to Fix LogonUI.exe error

If the system files in your computer system are corrupted or damaged, LogonUI Exe error may occur in Windows 10. In such a case, you must run System File Checker to fix this problem. Following are the steps that will guide you through this process. 

#1: Enter into Safe Mode and open the Run window. Input cmd and press Ctrl, Shift and Enter together to Run Command Prompt.

#2: Type sfc /scannow in the Command Prompt and hit ‘Enter.’

Run System File Checker to Fix LogonUI.exe Application Error

The System File Checker automatically scans the issues and fixes the corrupted files. The process may take a while, so you just need to wait patiently. After the completion of this process, restart your computer. 

In case this method does not help you solve the problem, you can use DISM scan, which is best in scanning and fixing the images in Windows 10.

Method 6: Boot your system to Fix LogonUI.exe error

As mentioned above, a few third-party antivirus or security software might cause LogonUI Exe error in your computer system. However, other applications can hamper your computer and might cause LogonUI.exe errors. If you don’t know the specific reason for the LogonUI Exe error, you can simply perform a clean boot and remove those applications altogether. After this, you can enable them one by one. 

Following are the steps that will guide you to execute this process smoothly. 

#1: Go to the Run window. Input msconfig and hit ‘Enter.’ This will lead you to the ‘System Configuration‘ window.

#2: Choose the ‘Service‘ tab, click on the ‘Hide all Microsoft services‘ to uncheck the box, and click on the ‘Disable‘ option.

Boot your system

#3: Now, go to the ‘Startup‘ tab and click on the ‘Open Task Manager‘ option. In the new window, choose each item mentioned and then click ‘Disable‘ in order to prevent these items from running on startup.

#4: Close the Task Manager window and return to System Configuration. Now, click on ‘Apply‘ and then ‘OK.’

After disabling all items and applications, restart your computer system. If you can log in to your system, this means that one of the applications was the culprit. Now, you can enable all those services and applications one by one to find out.

Method 7: Run Automatic Repair/Startup

If you did not find any problematic or corrupted application after performing a clean boot in your system and still encountering LogonUI Exe error, try Automatic Repair. You need to shut down and restart your computer system three times and enter WinRE. After that, select Advance option > Troubleshoot > Automatic Repair / Startup. Once Automatic Repair is finished successfully, you can restart your system and log in.

Run Automatic Repair to Fix LogonUI.exe Application Error

Method 8: Perform System Restore 

If you have a location where you can restore the data of your computer system, you must perform Restore System and restore your computer system to an earlier date. This process can solve LogonUI Exe error. First, go to WinRE and locate Advance options > System Restore.

Now select the administrator account, input your password and follow the on-screen instruction. This may solve the LogonUI Exe error.

Method 9: Reinstall Window 10 to Fix LogonUI.exe error

If none of the above methods helps you fix the LogonUI.exe error, the last option left for you is reinstalling Windows 10. We have kept this method at the last because reinstalling a whole system is not a preferable option. Even though it can fix the error, this method requires a lot of preparation before carrying out this process. 

Before reinstalling Windows 10, you need to restore all your personal and important data in another drive. MiniTool Partition Wizard will help you to restore all your data professionally.

The paid editions of this tool provide you a bootable media builder feature. This feature enables you to create a burned DVD/CD/USB. 

Let’s see how this tool works and restore your data in another drive.  

#1: Install MiniTool Partition Wizard on another working computer. 

#2: Now, use MiniTool Partition Wizard and create a bootable USB flash drive.

#3: Boot the problematic computer with the help of burned USB flash drive. This process will allow you to enter the main interface of this MiniTool. 

#4: Right-click on the system partition option and choose ‘Data Recovery.’ MiniTool will automatically start scanning the files in your system.

#5: After scanning, all the files will list in the Data Recovery section. Choose the file that you want to keep and click ‘Save.’

Reinstall Window 10

#6: Choose another drive in which you want to save your files. 

Use Windows 10 Media Creation Tool to reinstall Windows 10. Follow the below steps to carry on this process.

#1: First, you need to connect USB to another working computer system. Download Windows 10 Media Creation Tool and run this tool on this computer.

#2: Now, choose Creation installation media (DVD, USB flash drive, or IOS file) for a different computer. After that, click on ‘Next‘ and follow all the on-screen steps to finish this process. 

#3: Boot the computer system that you want to reinstall Windows from USB. Choose your preferences and click on the ‘Install now‘ option.

#4: Follow the on-screen information to reinstall Windows 10. You will get several reinstall options while you are reinstalling. You can select to remove all according to your need or keep your apps. 

After reinstalling Windows 10, you will be able to rerun your PC.  


In this article, we have mentioned nine methods that will help you to fix the LogonUI.Exe error. Read every step twice before taking any action so that you complete the process without any hurdle. In case the above solutions do not work for you, or you have other solutions to fix this error, comment down and let us know.