
How to Reinstall Windows Defender in Windows 11
If Windows Defender (Microsoft Defender Antivirus) is missing, disabled, or not working correctly...

If Windows Defender (Microsoft Defender Antivirus) is missing, disabled, or not working correctly...

If you're unable to update or install Windows Search through Windows Update, using an offline ins...

If Windows Defender is disabled on your system—often due to group policy, third-party antivirus, ...

If Outlook stops syncing with your Exchange Server, you’ll likely see errors like “Disconnected” ...

You enable BitLocker, but it fails with an error about a dependency conflict or service not start...

After a Windows update, you might notice that the search bar doesn't open or respond when you cli...