Have you encountered the “You’ll need a new app to open this windowsdefender link” error message while trying to access Windows Security in Windows 10 or 11?
This error typically pops up when something goes wrong with the Windows Security app, Windows Defender components, or related system services.
If you’re unable to open security settings or facing broken system links, don’t worry—we’ve got a step-by-step guide to fix it. f you want to know how to enable Windows defender then follow this guide to do that.
Why This Error Happens?
This issue can occur due to several reasons, including:
- A corrupted Windows Security app package
- The Security Center service is not running
- Misconfigured or missing Windows Registry entries
- Improper group policy changes or third-party antivirus interference
Also read: Persistent Windows Defender Actions Recommended Notifications – How To Fix?
How To Fix You’ll Need a New App To Open This Windowsdefender Link In Windows
Here is what to do when you get “You’ll Need a New App To Open This Windowsdefender Link In Windows” error.
1. Use the Services and PowerShell
If the Windows Security interface fails to open, it may be due to a stopped background service or a corrupted app package. This method restarts the Security Center service and re-registers the Windows Security app using PowerShell.
- Press Windows + R keys to open Run command box.
- Type services.msc and press Enter.
- In the Services window, press the S key to scroll to services starting with “S”.
- Find Security Center, and double-click to open it.
- If the Service status says “Stopped”, click Start.
- Click Apply, then OK.
- Next Open PowerShell as Administrator. For this, go to Start, search for PowerShell, right-click on it, and select Run as administrator.
- Copy and paste this command:
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
- Press Enter.
- After the command completes, restart your computer to apply the changes.
2. Use the Registry Editor
Sometimes, specific registry entries may be misconfigured or missing, causing Windows Defender to malfunction.
This method involves modifying the Windows Registry to re-enable key Defender features and permissions.
- Type regedit in the Run command box and hit Enter.
- Navigate to Windows Defender Registry Key. You can paste this path into the address bar at the top:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
- Press Enter.
- Next, create or Edit these Values in Right Pane.
- Right-click in the right pane select New then select DWORD (32-bit) Value.
- Name it as DisableAntiSpyware.
- Double-click it and set Value data to 0, then click OK.
- Next right-click again select New select DWORD (32-bit) Value.
- Name it as DisableRealtimeMonitoring.
- Double-click it and set Value data to 0, then click OK.
- Next navigate to this path
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Policy Manager
- If Policy Manager doesn’t exist, right-click on Windows Defender, choose New then select Key, name it Policy Manager.
- In the Policy Manager key, right-click in the right pane, select New then select DWORD (32-bit) Value. Name it as AllowUserUI.
- Double-click it, set Value data to 1, then click OK.
- Once done, close the Registry Editor and restart your computer.
Wrapping Up
That’s it! By restarting key services and tweaking some registry settings, you should now be able to access the Windows Security app without encountering the “You’ll need a new app to open this windowsdefender link” error.
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