windows
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, […]
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 […]
Microsoft to retire Microsoft 365 Companion apps in December
Microsoft announced that it will retire the Calendar, People, and Files Microsoft 365 companion apps on December 16 and urged admins to remove them from managed devices in their organization. This follows Microsoft’s October 2025 announcement that it will begin automatically installing them on all Windows 11 enterprise devices with the Microsoft 365 desktop client […]
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 […]
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 […]
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 […]
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, […]
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 […]
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 [..], […]
Microsoft fixes Teams, Outlook launch failures on ARM Windows PCs
Microsoft has fixed a bug that prevented Teams and Outlook from launching after installing updates released since the August 2026 Patch Tuesday. The company confirmed last week that this known issue affects users who haven’t installed Microsoft Store updates on ARM-based Windows devices (such as the Surface Pro 11 and Surface Laptop 7) running Windows […]