Forum Discussion
Windows Security won't open on Windows 11
You can try the following steps to resolve the issue:
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Run the Windows Security Troubleshooter: Go to Settings > Update & Security > Troubleshoot. Find and run the Windows Security troubleshooter.
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Repair Windows Security using DISM: Open Command Prompt as administrator and run the following commands: DISM.exe /Online /Cleanup-image /Restorehealth DISM.exe /Online /Cleanup-image /StartComponentCleanup
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Re-register Windows Security apps: Open a Command Prompt as administrator and run the following commands:
powershell -ExecutionPolicy Unrestricted Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"} -
Reset Windows Security app: Go to Settings > Apps > Apps & features. Find Windows Security, and click Advanced options. Click Reset.
If none of these steps work, you may need to perform a clean install of Windows 11 to resolve the issue.
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None of these worked, including the clean install, even in Feb. 2024. Also tried the video links that are available in the comments below.
It's not the IT Security permission issue for me. It's just that I could not open Windows security in settings or Security app from Start menu. I could not even end 'Antimalware Service Executable' in Task manager. It says 'access denied', but I am the only one who uses this PC. I have no other antiviruses or malwarebytes. Tried all the possible solutions. Please give me a way of getting rid of this tool completely in the first place. Even now, it is as good as not having it anyway.
thethoughtgenie I had the same issues, I tried everything suggested on this thread and several others, and my Windows Security would not open, a blank window would open for just a second, then disappear. This is what finally fixed it for me.....
Step 1. Open Powershell as administrator, run the following command like suggested earlier in the thread... Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackageHit enter, close Powershell (If you've done this already, then just go to the next step.)
Step 2. Click start on taskbar, in search type... windows security ...DO NOT hit enter though, look to the bottom right of start window, the last option should be... app settings ... click that and it should open a window inside of settings.
Step 3. Scroll down to the section... Reset ...there's two choices under that "repair" and "reset", click on... repair ....let it do it's thing for a few seconds, and you should be good to go.
If that doesn't work, you can try checking out the rest of the video I got this from, it had 2-3 other options after this one, here is the link.... https://youtu.be/zho0vAq6E1Q?si=YYtfWYSSXB8gtki8
this worked for me thank you so much. ik this is old post but this worked
SunshynRFF Yes, this works, and has worked on previous occasions, but the issue keeps coming back...
