24 Sep, 2026

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

Windows Server 2022 reaches end of mainstream support next month

Microsoft has reminded customers that Windows Server 2022 will reach the end of mainstream support next month and enter extended support until October 2031. Windows Server 2022 was unveiled in March 2021, and it became generally available in September 2021 as the Long-Term Servicing Channel (LTSC) release, with 10 years of support. “On October 13, […]

2 mins read

Microsoft releases emergency Windows updates to fix RDS failures

Microsoft has released emergency out-of-band Windows updates to fix Remote Desktop Services failures caused by this month’s security updates, along with Hyper-V and USB audio problems on some Windows versions. The September 2026 security updates caused Remote Desktop Services (RDS) to become unstable on affected systems, leading to RDP connection and sign-in failures and, in […]

3 mins read

Microsoft: September updates cause RDS failures on Windows Server

Microsoft has confirmed reports that the September 2026 security updates cause Remote Desktop Services (RDS) failures on Windows Server systems. According to a release health update on Friday, this known issue impacts Windows Server 2012 and later, as well as Windows 10 and Windows 11 devices. This confirmation follows widespread reports from Windows admins that […]

2 mins read

Microsoft: September updates break audio on some Windows PCs

Microsoft has confirmed that USB audio devices may fail on some Windows systems after installing the KB5124008 and KB5124012 September 2026 security updates. This known issue affects only devices running Windows 11, version 24H2 or later, and is limited to USB Audio Class 1.0 devices. “After installing the September 8, 2026, Windows security update [..], […]

1 min read