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

Microsoft confirmed a bug in recent Defender updates that's triggering incorrect "antivirus disabled" warnings across Windows ...
The Windows Club

Windows Defender keeps re-enabling itself on Windows 11

This method involves modifying a Registry value called DisableAntiSpyware. In older versions of Windows, this policy key was used by OEMs and IT administrators to disable Microsoft Defender Antivirus ...