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Fix Windows Security Issues in Windows 11 with a Reset

Richard
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Richard
Jul 19, 2021 Updated Apr 14, 2026 1 min read
Fix Windows Security Issues in Windows 11 with a Reset

You can fix Windows Security issues in Windows 11 by resetting the app.

Windows Security is the central hub that monitors and reports on your PC’s overall security and health status. When this dashboard app malfunctions, often closing unexpectedly or failing to open, resetting it is a common and effective solution.

Resetting the Windows Security app clears corrupted temporary files and application data, restoring it to its default configuration without affecting your personal files or installed antivirus software.

This process is typically needed when you encounter errors like the Windows Security app not opening or crashing after a recent Windows 11 update, such as build 22621.

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.

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Tags: #Windows 11
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