The lockapp.exe is the Windows component that controls Windows Lock Screen display. The lockapp.exe doesn’t run all the time. It only runs when your Windows computer is on the lock screen, for instance, locked, on rest, when you’re signing in to your PC, or using the Win + L PC lock shortcut to lock your PC.

However, sometimes users complain of problems with the lockapp.exe program. They say that they encounter high CPU and GPU usage by the lockapp.exe.

In this article, you’ll learn about the best three ways to stop the lockapp.exe.

Pro-Tip

Before you proceed to the best methods to stop lockapp.exe, learn more about the file information and reasons why the lockapp.exe can use so much PC resources in this Outbyte.com blog post:

Here are the three best ways to stop the lockapp.exe

Method #1: Stop LockApp.exe Using the Registry Editor

One of the best ways to stop LockApp.exe is through the Registry Editor.

1. Open Windows search and type Regedit to launch the Registry Editor.

2. In the Registry Editor, navigate to the following path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\

\CurrentVersion\Authentication\LogonUI\SessionData

3. Check the right pane and locate DWORD AllowLockScreen, then double-click on it.

HKEY_LOCAL_MACHINE

On the new window that pops us change the presented value from 1 to 0, then click OK.

Once you’re done, close the Registry Editor. The process you just followed should stop the LockApp.exe from running on your PC.

Now, check the Task Manager if the lockapp.exe is still running and using high CPU or GPU resources on your PC.

Method #2: Stop the LockApp.exe Using File Explorer

You can also stop the lockapp.exe using the Windows File Explorer by changing its registry name:

  • Press Win + E keys to open File Explorer
  • In the File Explorer, navigate to the following path:
    C:\Windows\SystemApps
  • Next, locate the Microsoft.LockApp_cw5n1h2txyewy folder and right-click on it
  • Now, choose Rename
  • Next, change the name of the folder to Microsoft.LockApp_cw5n1h2txyewy.backup
  • Once you’re done changing the name, close the File Explorer.
Microsoft.LockApp_cw5n1h2txyewy.backup

This process should stop the LockApp.exe from running on your PC and stop it from using high CPU resources.

Ensure that it has been stopped from running, check the Task Manager if it is still running, and still use high CPU or GPU resources on your PC.

Method #3: Boot PC in Safe Mode

Safe mode helps to start Windows in a basic state, which uses a limited set of drivers and files. If your computer’s problem doesn’t occur in safe mode, it means that basic device drivers and default settings aren’t causing the problem. You’ll be able to observe Windows in safe mode and check if lockapp.exe is really causing high CPU or GPU usage.
To start Windows in safe mode:

1. Press Win + I keys to open settings

2. Go to update & security > then select recovery

3. Locate advanced startup then select restart now

update & security > recovery

4. On PC restarts, select Troubleshoot > Advanced options > Startup Settings > Restart

5. Wait for the PC to restart then see the list of options

6. Select 4 or press F4 to start your PC in Safe Mode

Once you’re in the safe mode, check the Task Manager to see if the lockapp.exe is running and causing a high CPU. If it is not, then there might be something else causing the lockapp.exe to cause high CPU usage on your PC.

If the lockapp.exe is still causing high CPU usage, you can stop it from running on the Task Manager while in safe mode.

Read more about EXE files:

https://en.wikipedia.org/wiki/.exe

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