If Windows Defender is missing and is gone or has disappeared in Windows 11/10, here are some suggestions that are sure to help you resolve the issue.

Check if Microsoft Windows Defender does not start on Windows 10 issue still occurs. Method 9: Reset PC This is considered to be the last resort when the above mentioned fails to fix the issue.

The bug in the main Windows Defender program was described in Security Advisory 4022344. Chances are good your Windows computer got the fix last night.

A major vulnerability in Windows Defender allowed remote code execution by an attacker but has been fixed with an emergency patch from Microsoft.

After many years of relying on third-party antivirus programs, Windows users finally got the first-party solution from Microsoft in the form of Window.

Microsoft is making Windows Defender available via extensions for Mozilla Firefox and Google Chrome -- because everyone needs protection.