Known Issue
Microsoft confirms April Windows updates cause backup failures
Microsoft has confirmed that the April 2026 security updates are causing failures in third-party backup applications using the psmounterex.sys driver. As GeekFeed reported last week, this issue affects software using VSS (Volume Shadow Copy Service) snapshots and causes failures due to a VSS service timeout. Software impacted by this includes, but is not limited to, products from Macrium (Reflect), Acronis (Cyber […]
Microsoft fixes Remote Desktop warnings displaying incorrectly
Microsoft has fixed a known issue causing newly introduced Windows security warnings to display incorrectly when opening Remote Desktop (.rdp) files. This known issue affects all supported Windows versions, including Windows 11 (KB5083768 & KB5083769), Windows 10 (KB5082200), and Windows Server (KB5082063), on devices with multiple monitors and different display scaling settings. Microsoft addressed the bug in the optional KB5083631 preview […]
April KB5083769 Windows 11 update causes backup software failures
The April 2026 KB5083769 security update breaks third-party backup applications from multiple vendors on systems running Windows 11 24H2 and 25H2. According to user reports, first spotted by Microsoft MVP Susan Bradley, this issue affects software using VSS (Volume Shadow Copy Service) snapshots and causes failures due to a VSS service timeout. Microsoft VSS was introduced in Windows […]
Microsoft says backend change broke Teams Free chat and calls
Microsoft is working to resolve a known issue that prevents some Microsoft Teams Free users from chatting and calling others. Teams Free (also known as Teams for personal use) is a subscription-free version designed for individuals, families, and small community groups, which provides video conferencing, instant messaging, and collaborative file-sharing tools on mobile and desktop […]
Microsoft: New Remote Desktop warnings may display incorrectly
Microsoft has confirmed a new issue causing newly introduced Windows security warnings to display incorrectly when opening Remote Desktop (.rdp) files. This known issue impacts all supported Windows versions, including Windows 11 (KB5083768 & KB5083769), Windows 10 (KB5082200), and Windows Server (KB5082063). As Microsoft explains in updates to the original advisories, “the security warning that appears […]
Microsoft traces Universal Print issues to Graph API code change
Microsoft says that an ongoing Universal Print sharing issue that prevents users from creating some printer shares is due to a Microsoft Graph API code change. Universal Print is a cloud-based print solution designed to replace on-premises print server setups and provide Microsoft 365 customers with centralized print management capabilities. After confirming the issue (tracked under UP1287359) on […]
Microsoft tests Windows Explorer speed, performance improvements
Microsoft is rolling out multiple File Explorer changes to Windows 11 users in the Insider program, including improvements to launch speed and performance. While Microsoft didn’t share how the speed and performance improvements are being implemented, it was testing a new feature in November that preloaded File Explorer in the background to improve launch times and performance. […]
Microsoft pulls service update causing Teams launch failures
Microsoft has reverted a recent service update that was preventing some customers from launching the Microsoft Teams desktop client. Affected users are getting stuck on the loading screen and seeing the “We’re having trouble loading your message. Try refreshing.” error message. On Friday morning, after acknowledging the incident (tracked under TM1283300), Microsoft said the launch failures […]
Microsoft: Some Windows servers enter reboot loops after April patches
Microsoft has confirmed that some Windows domain controllers are entering restart loops due to Local Security Authority Subsystem Service (LSASS) crashes after installing the April 2026 security updates. The company also warned that Windows admins may encounter this issue when setting up new domain controllers, or even on existing ones, if the server processes authentication […]
Microsoft: April Windows Server 2025 update may fail to install
Microsoft is investigating an issue causing this month’s KB5082063 security update to fail to install on some Windows Server 2025 systems. On affected systems, users are also reporting seeing 0x800F0983 install errors when trying to deploy the April 2026 cumulative updates. “Microsoft is monitoring diagnostic data reports on update installation failures and has observed a […]