Question Cannot Open Windows Security

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Xeno1234

Level 14
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Jun 12, 2023
699
Im on Windows 11, and I cannot Open Windows Security, or anything related to it like Smart App Control, Core Isolation, etc.
 

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Apr 21, 2016
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There could be various reasons why you are unable to open Windows Security on Windows 11. Here are a few troubleshooting steps you can try:

1. Restart your computer: Sometimes, a simple restart can resolve minor system glitches.

2. Check for updates: Make sure your Windows 11 is up to date with the latest updates. Go to Settings > Windows Update and click on "Check for updates."

3. Run the Windows Security troubleshooter: Go to Settings > Privacy & Security > Troubleshoot > Additional troubleshooters, and run the Windows Security troubleshooter.

4. Perform a system file check: Open Command Prompt as an administrator and run the command "sfc /scannow" to check for and repair any corrupted system files.

5. Use Windows PowerShell to reset Windows Security: Open PowerShell as an administrator and run the command "Get-AppXPackage -AllUsers -Name Microsoft.Windows.Secu‌​reShell | Foreach {Add-AppxPackage -DisableDevelopmentM‌​ode -Register "$($_.Insta‌​llLocation)\AppXMan‌​ifest.xml"}" to reset the Windows Security app.

If none of the above steps work, you may want to consider contacting Microsoft Support for further assistance.
 
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Gandalf_The_Grey

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Apr 24, 2016
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8 Ways to Fix Windows Security Not Opening or Working on Windows 11
Windows Security (popularly known as Windows Defender) is a built-in app that offers real-time protection against viruses and malware for your computer. If you rely on the Windows Security app to monitor your device’s health and performance, it can be frustrating when the app fails to open or work.

Before you jump ship to a paid third-party antivirus program, consider trying out the following troubleshooting tips to fix the Windows Security app not opening or working issue on Windows 11.
 
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Xeno1234

Level 14
Thread author
Jun 12, 2023
699

Gandalf_The_Grey

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Apr 24, 2016
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Normally that should not be a problem with a third party AV.
Hopefully "1. Repair Or Reset The Windows Security App" can solve this problem.
 
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Xeno1234

Level 14
Thread author
Jun 12, 2023
699
If something stops working, a reset of Windows will restore it to default minus any installed apps.
It uninstalls the applications, but saves some of the files with them, for example it doesnt wipe my games, their still there, I just have to "reinstall" them,
 

Xeno1234

Level 14
Thread author
Jun 12, 2023
699
This has turned into a worse issue, Windows Security is gone. Its not installed. I've reset windows, tried SFC and DISM, tried installing, etc. Idk what to do.
 
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