update bug Archives

Winsage

January 17, 2026

Microsoft confirms strange Windows 11 update bug affecting Outlook POP accounts

The KB5074109 update for Windows 11, released on January 13, 2026, has caused Outlook to freeze and hang for users with POP account profiles, preventing the application from exiting properly. Microsoft is currently investigating this emerging issue, which has not yet been listed in the Known Issues section of the update's release notes. A temporary workaround suggested involves uninstalling the KB5074109 update, though this may expose systems to security vulnerabilities.

Winsage

December 2, 2025

Gamers confirm frame drops after Windows 11 update that Microsoft won’t acknowledge, but Nvidia has fixed it

Windows 11's October update (KB5066835) has caused significant performance issues for gamers, particularly those using Nvidia GPUs, leading to a drop in frame rates from 120–140 FPS to 40–70 FPS. The update has primarily affected systems running Windows 11 versions 24H2 and 25H2, while users on Windows 10 and those using Linux or Steam Deck reported no issues. Affected Nvidia models include the RTX 5000 series and RTX 4080 and 4090. In contrast, AMD graphics card users maintained normal performance levels. The cause of the frame rate drops is unclear, but it may involve conflicts between Windows updates, Nvidia drivers, and game engine interactions. Nvidia released a hotfix driver on November 19, which reportedly restored and even improved performance for some users.

Winsage

November 22, 2025

Nvidia confirms October Windows updates cause gaming issues

Nvidia has acknowledged that recent security updates have caused gaming performance challenges for users on Windows 11 versions 24H2 and 25H2. To address these issues, Nvidia released the GeForce Hotfix Display Driver version 581.94. This hotfix driver is a beta version and has not undergone the standard quality assurance procedures, allowing for quicker deployment. Users may experience diminished performance in certain games after installing the Windows 11 October 2025 update, specifically KB5066835. The hotfix drivers are optional and have been expedited to provide timely solutions. Users can access the driver for both Windows 10 x64 and Windows 11 x64 systems via Nvidia's Customer Care support site. Additionally, Microsoft has addressed various bugs in recent Windows updates, including issues with localhost HTTP connections, smart card authentication, and the Windows Recovery Environment.

Winsage

October 20, 2025

Windows 10 KB5066791 last update without ESU, direct download links (.msu)

Windows 10 KB5066791 is the final update for users not opting for Extended Security Updates (ESU). It addresses several bugs, primarily benefiting enterprise users, while providing minimal enhancements for consumers. The update is distributed via Windows Update, with direct download links available for manual installation. Upon installation, users may not notice visible changes, and it appears as “2025-10 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5066791).” Windows 10 Build 19045.6456 does not introduce significant new features but fixes issues, including a correction for the Chinese Input Method Editor (IME) and a bug affecting Windows Remote Management. A new servicing stack update has been introduced, and the legacy driver tmdm64.sys has been removed. Security has been enhanced with a requirement for Key Storage Provider (KSP) smart card certificates, which may cause issues with smart cards in older 32-bit applications. Microsoft has confirmed that KB5066791 can lead to smart card failures, particularly in older programs, and has provided registry modification steps for users to potentially resolve this issue. The first security update for users opting for Windows 10 ESU is scheduled for November 11, 2025. Users can enroll through the Windows Update page or purchase a paid option through the Windows Store for .99, extending updates until October 13, 2026.

Winsage

October 19, 2025

Windows 11 25H2 October Update Bug Renders Recovery Environment Unusable

Microsoft is facing a challenge with the Windows 11 25H2 October update (KB5066835), which disrupts mouse and keyboard functionality in the Windows Recovery Environment (WinRE), making it inoperative. WinRE is a troubleshooting toolkit that activates during startup problems or system malfunctions. Microsoft confirmed that USB keyboard and mouse work normally within the Windows operating system and is working on a solution. This issue adds to other complications from recent Windows 11 updates, including localhost issues and disruptions to the Windows Media Creation Tool. Users are unable to initiate recovery processes due to the lack of functional input devices.

Winsage

October 13, 2025

Microsoft Fixes Long-standing Windows 11 ‘Update and Shut down’ Bug

Microsoft has resolved the "update and shut down" bug in Windows 11 with the release of Build 26220.6760 on September 29, 2025. This bug caused systems to reboot automatically instead of shutting down when users selected the "update and shut down" option. The fix ensures that pending updates no longer trigger automatic restarts during a shutdown request. Windows Insiders in the Dev or Beta channels can access this fix, while non-Insider users are advised to wait for the stable release.