A system restart is often overlooked, but it can fix most problems.
Before following the next methods, you must first power cycle your PC.
punch the Power button and select Restart.

Close other Security Programs
If Windows 11 detects a third-party security tool, it automatically turns off Windows Security.
If this service is disabled, the app wont work.
So, its best to restart the service.

Press theWindows Key + Rbutton on your Keyboard.
This will fire up the RUN dialog box.
On the RUN dialog box, punch in inservices.mscand hit theEnterbutton.

On Windows Services, search forSecurity Center.
Right-tap on the Security Center and selectRestart.
System file corruption can prevent Windows Security from functioning properly.

you’re free to run these two commands to address the possibilities of corrupted system files.
First, hit the Windows 11 search and punch in in Command Prompt.
Right-press the Command Prompt and selectRun as administrator.

On the Command Prompt, entersfc/ scannowand hit theEnterbutton.
The System file checker utility will run and attempt to replace the corrupted system files.
Heres how you’re free to reset the Windows Security app.

Launch theSettingsapp and click onApps.
On the right side, click onInstalled Apps.
Find the Windows Security app and choose thethree dotsnext to it.

On the menu that appears, selectAdvanced options.
On the next screen, click onReset.
Back up your essential apps and files before resetting Windows 11.

This will prevent data loss.
- grab the Windows 11 Start menu and selectSettings.
On the tweaks app, navigate to theSystem > Recovery.

On the Recovery screen, tap on theReset PCoption.
Select whether you want to keep your files or remove everything on the next prompt.
Its recommended to pick theKeep my filesoption.

After the reset, try running the Windows Security app again.
This time, the app will run fine.
Now, follow the on-screen instructions to complete the reset process.

These are some of the best ways to fix the Windows Security app not working on Windows 11.
These methods will surely fix Windows Security app-related problems on your PC.
Let us know if you have any doubts about the Windows security app.

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