15 Oct, 2026

Windows 11 KB5124010 update released with 46 changes and fixes

Microsoft released the KB5124010 September 2026 non-security preview update for Windows 11 24H2 and 25H2, with 46 changes including Bluetooth improvements and the ability to remap the Copilot key. KB5124010 is a preview update that lets administrators and users test Windows improvements, bug fixes, and new features before they become generally available during next month’s […]

3 mins read

Microsoft fixes bug that broke Windows File History backup feature

Microsoft has fixed a known issue that breaks the built-in File History backup feature on some Windows systems after installing the September 2026 security updates. File History, introduced in Windows 8 and later replaced by Windows Backup, automatically backs up the user’s account profile (Documents, Music, Pictures, Videos, and Desktop) to an external hard drive, […]

2 mins read

Microsoft: September Windows updates break Always On VPN connections

Microsoft has notified IT administrators that users may experience Always On VPN connection issues after installing the September 2026 Windows 11 security updates. Always On VPN is a remote access solution that replaces the legacy DirectAccess technology and works with domain-joined, non-domain-joined, and Microsoft Entra ID–joined devices. It is available on Windows 10, Windows 11, […]

2 mins read

New ClosedQuorum Windows malware uses AI for attack decisions

A new Windows malware named ClosedQuorum uses Google Gemini, DeepSeek, Qwen, and Mistral AI models to autonomously determine the actions to take during post-compromise stages of an attack. The Go-based malware acts with no commands from a human operator, using reconnaissance information and a voting system to decide its next step on infected hosts. When […]

2 mins read

New Windows Defender zero-day blocks Microsoft antivirus updates

Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates. Naceri named it BigDiskBuster and said it is similar to another Defender zero-day known as UnDefend, which he released in April and that allowed standard users to block definition updates. The security researcher added […]

2 mins read

Microsoft: September updates break File History backup feature

Microsoft warned that the built-in File History backup feature in Windows may stop working on some systems after installing the September 2026 security updates. File History (introduced in Windows 8 and replaced by Windows Backup, which backs up data to OneDrive) automatically saves copies that let users recover accidentally deleted or damaged files using an older version […]

2 mins read

Microsoft fixes bug behind ‘Defender Antivirus is turned off’ alerts

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 Thursday, Microsoft said the issue was fixed in the Microsoft Defender Antivirus update (version 4.18.26080.4) released on September 17. The company acknowledged the bug in late […]

2 mins read

Windows 11 24H2 Home and Pro reach end of support in October

Microsoft reminded customers this week that devices running Windows 11 24H2 Home and Pro editions will stop receiving updates next month. However, under Microsoft’s lifecycle policy, Windows 11 24H2 Enterprise and Education editions remain under mainstream support until October 2027. “On October 13, 2026, Windows 11, version 24H2 Home and Pro editions, and Windows 10 […]

2 mins read

Microsoft shares workaround for Windows domain login issues

Microsoft shared a temporary fix on Wednesday for a known issue that prevents Windows 11 users from logging in with valid domain credentials after installing the September 2026 security updates. According to widespread reports from users and IT administrators on Microsoft’s Q&A forums, Reddit, and other online platforms, this bug breaks domain trust relationships on […]

3 mins read

Windows 11 KB5124008 update breaks domain trust for some users

Microsoft is investigating reports that the Windows 11 KB5124008 security update is breaking domain trust relationships on some enterprise systems, preventing users from logging in with valid domain credentials. Administrators report on Reddit and Microsoft’s Q&A forums that affected computers lose their secure channel with Active Directory after the Windows 11 update is installed and […]

4 mins read