How to Reinstall Windows Defender in Windows 11

Are you having trouble with Windows Defender not working correctly on your Windows 11 computer? Maybe you’re seeing error messages when you try to open it, or it’s not even turning on. Fortunately, there are ways to fix these issues and get Windows Defender back to its original settings.

Firstly, it’s important to note that Windows Defender is not installed on your computer like a typical program. So, you can’t reinstall it like you can with regular software. However, there are a few methods you can use to get Windows Defender back up and running.

One way to reinstall Windows Defender is through a PowerShell command. To do this, open the Start menu and select Terminal as admin. If that doesn’t work, use the search bar on the taskbar to search for PowerShell and right-click to find the “run as administrator” option. Copy the command shown in the tutorial and right-click in the PowerShell window to paste it. Press enter to start the process and wait for it to complete.

If you’re having trouble with PowerShell, you can also try reinstalling Windows Defender through Settings. Go to Settings > Apps > Apps & features > Windows Security > Advanced options > Reset. This should reinstall Windows Defender and get it working correctly.

It’s important to note that you might not actually be able to uninstall Windows Defender from your computer. But, if it’s not working correctly, reinstalling it using the methods above should fix any issues you’re having.

In some cases, you might see an error message that says “You will need a new app to open this Windows Defender link” or Windows Defender might be turned off. If this is the case, the PowerShell command or Settings method above should fix the issue.

Overall, reinstalling Windows Defender in Windows 11 can be done using a few different methods. Whether you use PowerShell or Settings, it’s a quick and easy way to get Windows Defender back to its original settings.


Can I reinstall Windows Defender in Windows 11?
You can reinstall Windows Defender in Windows 11 via Windows 11 PowerShell or Windows Terminal. Please note that you will need administrator privileges to execute the command. Press Windows + S to open the search bar in the taskbar.
How do I fix Windows Defender not showing in Windows 11?
Turn on Windows Security. ... Update Windows 11. ... Disable Third-party Antivirus. ... Reset the Security App. ... Run an SFC and DISM Scan. ... Reset Your PC.
How do I completely reinstall Windows Defender?
Press the Win+I key on the keyboard to open Settings.Click on App settings on the left side.Under Installed apps, search for Windows Security.Click on the 3 dots and select Advanced option.On the next page, click on the Reset button in Settings.Click on Reset to confirm.