What is LockApp.exe on Windows 10

Windows has tons of system programs or EXE which are not known to many. However, the Windows Task Manager does show a list of programs using resources on your computer. One of the programs that caught my attention was LockApp.exe. Sometimes, I had seen it consuming a lot of resources, and sometimes it doesn’t. When I looked around a lot of forums, it seems to have sometimes consumed like 35% resources, and even GPU usage. In this post, we will discuss what LockApp.exe is, and what you should do in case it looks suspicious.

LockApp.exe in Windows 10

LockApp exe

Its an official application from Microsoft, and is part of the default lock screen app on Windows. It’s safe. It is usually located under Windows > SystemApps > Microsoft.LockApp_XXXXXX> LockApp.exe. It is possible that this could be doing a lot more than that including notifying you about an update when you unlock your PC.

Is LockApp.exe a virus?

The legit LockApp.exe program is located in the C:\Windows\SystemApps\Microsoft.LockApp_cw5n1h2txyewy folder. If it is located in any other location, it could well be malware. To confirm, you may right-click on the file > Properties > Details tab. You see that it is a Windows OS file. In any case, it is best you run your antivirus or Windows Defender scan.

Just before we go ahead, if you are using any File Monitoring tool, and it triggered you about its change, it does not mean its bad. The file is duly signed by Microsoft, and they might have sent an update to the file.

How to make sure LockApp.exe is not infected?

That said, its good time to use Windows Defender which has native integration in Windows 10. Launch Windows Defender Security System from the programs menu. Go to Home > Virus and threat protection > Run an advanced scan.

Windows 10 Defender Custom Scan Offline Scan

The first step is to use custom scan and choose files and locations you want to check. In this case, select LockApp.exe. If this doesn’t give any warning, to double check, use Windows Defender Offline. This will make sure the virus cannot duplicate or anything else as the privileges are very low for any program there.

How to disable LockApp.exe

If you wish to stop LockApp.exe from running, you can simply rename the Microsoft.LockApp_cw5n1h2txyewy folder. Or you could modify the Registry to stop it from running as follows:

Open Windows Registry and navigate to the following path:


Now in the right side pane, you will see DWORD AllowLockScreen. Double-click on it and set its value to 0.

Have you encountered any issues with LockApp.exe? Maybe your Lock Screen stopped working, or it was stuck on the display? Let us know in the comments.

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Ashish is a veteran Windows, and Xbox user who excels in writing tips, tricks, and features on it to improve your day to day experience with your devices.