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

The company added both problems to its Windows release health dashboard on August 28. Microsoft has confirmed the Defender ...

Microsoft actually wanted to close a security gap, but a current update now apparently partially paralyzes Windows Defender.

Per Windows Latest, “in our tests, we found that the Windows Security app, which manages Microsoft Defender Antivirus, ...

If Windows 11 is sending alerts that you need to turn on virus protection and your PC is unprotected, don't worry.

Microsoft restarts Windows 11 once a month, syncing driver and firmware updates with Patch Tuesday, but hotpatch PCs face two restarts in September and October.

Microsoft has resolved a bug that caused Windows Defender to crash after a recent security update, resulting in 0xc0000005 access violation errors on some affected systems. Microsoft Defender is a ...

Microsoft patches two actively exploited zero‑day flaws in Defender, tracked as CVE‑2026‑41091 (privilege escalation) and CVE‑2026‑45498 (denial of service) Updates were shipped automatically via ...

Updates for Windows and Defender are causing mouse problems and incorrect Defender status warnings. Microsoft is confirming ...

Recently, Microsoft delivered its latest Defender patches for Windows 11 ISOs. These definitions are released from time to time alongside the general security updates available during Patch Tuesday.