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Fix Windows Security Issues in Windows 11 with a Reset

Richard
Written by
Richard
Jul 19, 2021 Updated Apr 14, 2026 2 min read

Is your Windows Security app acting up? Sometimes this app stops working or closes unexpectedly. Resetting it often fixes these glitches. This guide will show you how to get it back to normal.

Why reset Windows Security?

Windows Security acts as a dashboard for your computer’s health. It is not the antivirus itself, but it shows you the status of your system. If the dashboard won’t open or keeps crashing, a reset clears out corrupted data and restores the app to its original state.

What happens when you reset?

Resetting the app deletes your personal preferences and saved data within the app. It does not delete your files or remove your actual antivirus protection. It simply gives the app a fresh start.

How to reset the app through Settings

  1. Click the Start button on your taskbar.
  2. Type Windows Security into the search box.
  3. Right-click the app in the results and choose App settings.
Accessing App settings for Windows Security in Windows 11

  1. Scroll down until you see the Reset section.
  2. Click the Reset button.
Locating the Reset button within Windows Security app settings

  1. A warning will appear telling you that app data will be deleted. Click Reset again to confirm.
Confirmation prompt for resetting Windows Security app data

What if the app is missing?

If you cannot find the app at all, you can use a command to reinstall it. This requires admin privileges.

  1. Click the Start menu and search for PowerShell.
  2. Right-click PowerShell and select Run as administrator. %%LNK0%%
Running PowerShell as administrator to fix Windows Security issues

  1. Type the following command and press Enter:
⬛PowerShell
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

The app should now be repaired and ready to use.

Windows Security dashboard interface on a Windows 11 computer

Summary

  • Windows Security is your main hub for checking system health.
  • Resetting the app is a simple way to fix crashes or errors.
  • You can reset through the standard Settings menu or by using a command in PowerShell if the app is missing.
  • Performing a reset clears app data but keeps your computer safe.

Was this guide helpful?

Tags: #Windows 11
Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, the owner and lead writer at Geek Rewind, is a tech enthusiast passionate about simplifying complex IT topics. His years of hands-on experience in system administration and enterprise IT operations have honed his ability to provide practical insights and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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59 responses to “Fix Windows Security Issues in Windows 11 with a Reset”

  3. To resolve the issue with the app no longer appearing. Run the below in an elevated powershell.

    Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

    Reply

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