So, is Windows Defender secure? Fortunately, you don't need to download every antivirus and manually test how good it is at defending your computer. Research teams specialize in antivirus and ...

Microsoft had recently released new Defender anti-malware ... Devices using either the Windows built-in antivirus or another security solution can benefit from these updates.

i.e., Windows 11 versions 22H2 and 21H2. The Microsoft health dashboard describes the issue as following: After installing "Update for Microsoft Defender Antivirus antimalware platform - KB5007651 ...