Microsoft updates Windows Defender definitions for Windows 11 26H2 installation images, improving protection against malware ...

Microsoft released a new Defender update for Windows 11,10, and Server installation images. It patches backdoors and more.

Microsoft released a new Defender update for Windows 10 and 11 ISO images. According to the company, this update must be deployed across all new Windows 11 and 10 installs. This past week Microsoft ...

Microsoft has resolved a known issue that causes incorrect alerts warning that Defender Antivirus was turned off after installing recent updates. In a Windows release health dashboard update on ...

Microsoft Defender will continue to work in Windows 10. Defender will receive regular security updates until October 2028. Microsoft still recommends Windows 11 for new security patches. You probably ...

Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates. The security researcher ...

Microsoft will retire Defender security APIs on February 1, 2027. IT admins must migrate to Microsoft Graph to avoid ...

A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows machines to write files large enough to completely consume available disk ...

Best Antivirus Software Best Antivirus for Windows 11 PCs in 2026 Ranked Every Windows 11 PC comes with an antivirus already enabled. In fact, Microsoft Defender now scores well in independent lab ...

The majority of the updates that come through Windows Update are for Windows Defender, and for good reason. Windows Defender helps make your antimalware and other security protections stronger.