Fix Windows Update Problems with proven steps: clear the cache, free disk space, and recover from reboot loops or failed ...

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 ...

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.

A blog for IT professionals who work with Windows on large networks. Last month, I wrote a blog post here about co-called “corrupt file” messages originating in SFC /scannow. On Friday, August 16, ...

Recently, a handful of Windows 11 users have reported on Microsoft forums that they are repeatedly getting warnings that their PC’s security is off. It appears that a Windows 11 antivirus bug falsely ...

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

CVE-2026-50656 is due to improper link resolution before file access, affects Windows 10 and Windows 11, and may allow authenticated attackers to achieve SYSTEM-level privileges on vulnerable machines ...

It’s October 2026, and Microsoft is still finding bugs in Windows 11’s September updates, and it's affecting version 26H2.