Filed Under: How to Repair, Windows

Let’s Fix LogonUI.exe Application Error With Ease


Written by Jack Lin

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LogonUI.exe Error

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 unsure about the cause of the LogonUI.exe error, you can try the methods below to fix it.           

What Is LogonUI.exe Error?

To solve the problem, one must have information about that problem. Therefore, in this section, you will briefly learn about the LogonUI Exe error 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 stops you from logging in to your account, which is the critical process of opening 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, it might be the virus pretending to be the file.

Some Windows users complain 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

The Ctrl + Alt + Del shortcut key allows you to stop the unresponsive application. You must try this shortcut key if encountering a LogonUI Exe error. However, this is not a 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. If you run into this error, the below-mentioned methods will help you fix this issue.

Method 2: Remove Security Program for Login

Some Sensible vision security programs also cause LogonUI Exe errors. The facial expression security program might not support Windows 10, so you must remove such software from your computer system. 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. 

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

Besides, if you wonder how to repair Windows 10 without CD, just click to read more.

Method 3: Remove Antivirus Software

External antivirus download can also trigger a LogonUI.exe error on 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.

To fix this issue, you need to remove or disable the graphic card adapter from your computer system. Not to mention you first need to enter Safe Mode.

After that, follow the below guide to learn the process.

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

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

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

Didable Graphic Card Adapter

#4: Click on ‘Yes’ in the new window 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

If the system files in your computer system are corrupted or damaged, a 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 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. 

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

Method 6: Boot Your System

As mentioned above, a few third-party antivirus or security software might cause LogonUI.exe errors in your computer system. However, other applications can hamper your computer and might cause LogonUI.exe errors.

You can perform a clean boot and remove those applications altogether if you don’t know the specific reason for the LogonUI Exe error. 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 Hide all Microsoft services to uncheck the box, and click on the Disable option.

Boot your system

#3: Go to the ‘Startup’ tab and click on the Open Task Manager option. In the new window, choose each item mentioned and click Disable 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. One of the applications was the culprit if you can log in to your system. Now, you can enable all those services and applications 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 must shut down and restart your computer system three times and enter WinRE.

After that, select Advance options > 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 the LogonUI.exe error. First, go to WinRE and locate Advance options > System Restore.

Select the administrator account, input your password, and follow the on-screen instructions. This may solve the LogonUI.exe error.

Method 9: Reinstall Windows 10

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 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 the process. 

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

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

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.

choose 'Data Recovery'

#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 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, connect the 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 Next and follow all the on-screen steps to finish this process. 

#3: Boot the computer system 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.  

Frequently Asked Questions (FAQs)

FAQ 1: What is LogonUI.exe?

LogonUI.exe is a system file in Windows that manages the user logon and logoff processes. It provides the graphical interface where users enter their credentials to access the system.

FAQ 2: How do I know if I have a LogonUI.exe application error?

You may encounter a LogonUI.exe application error if you experience issues during the logon process, such as a blank screen, error messages, or system freezes. These errors typically occur before you reach the desktop.

FAQ 3: Can LogonUI.exe errors be fixed without technical expertise?

Yes, many LogonUI.exe errors can be resolved without technical expertise by following the troubleshooting steps outlined in this article. However, if you are uncomfortable performing these steps, it is recommended to seek assistance from a knowledgeable individual or a professional technician.

FAQ 4: Why is it important to keep device drivers up to date?

Updating device drivers is crucial to ensure compatibility, stability, and optimal performance of your hardware devices. Outdated drivers can lead to various errors, including LogonUI.exe application errors.

FAQ 5: What if none of the troubleshooting methods resolve the LogonUI.exe error?

If none of the provided methods resolve the LogonUI.exe error, it is advisable to seek advanced technical support. Contacting Microsoft support or consulting a qualified professional can help diagnose and resolve complex issues.

FAQ 6: How can I prevent LogonUI.exe errors in the future?

To prevent LogonUI.exe errors, it is recommended to practice good cybersecurity habits, such as regularly updating your operating system, using reputable antivirus software, and avoiding suspicious websites or downloads. Additionally, be cautious when installing new software and ensure compatibility with your system.


In this article, we have mentioned nine methods to help you fix the LogonUI.exe error. Read every step twice before taking action, so you complete the process without any hurdles.

If the above solutions do not work for you or you have other solutions to fix this error, comment and let us know.


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