Windows 10 and 11 users are seeing a Defender warning that isn't real

PCWorld reports that Windows 10 and 11 users are seeing false warning messages claiming Microsoft Defender has been turned off, despite the security software remaining fully active. The issue stems from a recent antivirus update bug, causing incorrect notifications across multiple Windows versions. Microsoft is aware of the problem and is working on a fix expected in an upcoming update, so users should not panic. Over the past few days, some Windows 11 users have been getting incorrect warning messages about Microsoft Defender--the operating system's built-in security solution--being disabled.