Patch Tuesday Archives

Winsage

September 18, 2026

Microsoft fixes Excel’s copy-paste bug, but only for a small group of people

Microsoft acknowledged a bug affecting Excel's copy and paste functionality that emerged after the September Patch Tuesday update. They have released an out-of-band update to resolve various issues, including the Excel bug. Instructions for users to navigate the issue include using the Paste Special feature and selecting options like Formulas, Values, or Links. Microsoft is investigating the root cause of the issue and plans to implement broader fixes. Additionally, Windows 11 is being refreshed to streamline the update process and reduce bugs.

Winsage

September 17, 2026

Microsoft Confirms Windows 11 Speed Fixes Are Coming to All Users

Windows 11 users have experienced delays in File Explorer and the Start menu since the operating system's launch in 2021. Recent reports from Windows Insiders indicate significant improvements in system responsiveness, confirmed by Marcus Ash from Microsoft, who stated that these enhancements will be rolled out to all users by fall 2026. Recent cumulative updates have addressed issues like File Explorer lag and Start menu stuttering, with specific updates (KB5120998, KB5095093, and KB5089573) improving responsiveness and reducing micro-stutters. Enhancements to the taskbar, Start menu, and context menus are also being developed, including taskbar repositioning and streamlined context menus. Users on the 25H2 version can expect these improvements through cumulative updates before the 26H2 update this fall. Keeping Windows Update active will ensure access to these enhancements.

Winsage

September 17, 2026

Microsoft explained why Windows 11 dropped these Windows 10 features

Windows 11 was released in 2021 and received mixed reactions, with users noting the removal of several familiar features from Windows 10. The taskbar was locked in place, preventing repositioning, and the ability to drag files onto taskbar applications was initially absent but restored within a year. The Start menu lost flexible resizing options, and Microsoft faced challenges in transferring established features due to the new framework. By 2026, Microsoft announced changes allowing users to relocate the taskbar, responding to user demand. The Start menu remained less flexible than its predecessor, leading to user frustration. Microsoft acknowledged the need for a movable taskbar, which was implemented in a preview by May 2026, coinciding with the September 2026 Patch Tuesday update. The integration of AI into development processes has accelerated feature implementation, but also introduced new stability issues.

Winsage

September 15, 2026

Microsoft issues emergency Windows 11 update to fix its record-breaking patch

Microsoft has rolled out an emergency out-of-band update to address issues from its September Patch Tuesday update, which affected nearly 1,000 vulnerabilities and caused bugs in folder shares on Hyper-V-based Linux virtual machines, Remote Desktop Services sessions, and certain USB audio devices. The new update targets multiple versions of Windows 11 (26h1, 25H2, and 24H2) and also includes updates for Windows Server 2025, 2022, and LTSC versions of Windows 10 and Windows Server 2012 and 2012 R2. In 2023, Microsoft has increasingly issued out-of-band updates, including four in January, two in March, and one in July, to resolve various issues.

Winsage

September 15, 2026

Windows 11 update breaks copy and paste in Microsoft Excel

Microsoft is facing challenges in September due to bugs in Windows 11, particularly affecting Excel's copy and paste functionality after a recent OS update. Users of Excel 2024, 2021, 2019, and 2016 may experience silent failures when attempting to paste content, with no error messages provided. Microsoft is investigating this issue. Following the September Patch Tuesday update, which included nearly 1,000 security fixes, users are advised to install the update but may consider delaying it due to existing bugs. Additionally, Microsoft has launched the Windows K2 initiative to improve the Windows 11 experience by streamlining the update process, although users have still encountered multiple updates in September.

Winsage

September 15, 2026

Microsoft just patched over 1,000 flaws in Windows, but you might want to wait to update your PC

Microsoft released a September Patch Tuesday update for Windows 11 that addressed nearly 1,000 vulnerabilities but introduced bugs affecting some users' PCs. The update, 25H2, reintroduced features like a movable taskbar and a customizable Start menu. Users with AMD Radeon GPUs reported system crashes due to driver instability, and emergency patches from Microsoft did not resolve these GPU issues. Users are advised to consider rolling back their systems to a state prior to the August Patch Tuesday. HP and Lenovo PC users are cautioned, as the update may cause BIOS corruption on HP machines and random shutdowns or black screens on Lenovo devices. HP is working on a BIOS revision, but the cause of the issues remains unclear.

Winsage

September 15, 2026

Microsoft Releases Emergency Windows 11 Updates to Address Security Vulnerabilities

Microsoft has released out-of-band updates for Windows 11 versions 26H1, 25H2, and 24H2 to address security vulnerabilities and improve system performance. The KB5129194 patch for version 26H1 fixes a critical elevation-of-privilege vulnerability (CVE-2026-62721) related to the Windows User-Mode Power Service (UMPS). The KB5129195 update for versions 25H2 and 24H2 also addresses a similar UMPS vulnerability and resolves a connection issue with Remote Desktop Services. Additionally, the updates fix problems with multichannel audio features on certain USB Audio Class 1.0 devices. These updates include enhancements from the September 2026 Patch Tuesday release, such as Taskbar customization, a faster Windows Search experience, and new Start Menu options. Users with unmanaged PCs will receive these updates automatically but can also check for updates manually.

Winsage

September 14, 2026

Latest Windows Server Updates Cause Remote Desktop Issues

Organizations that implemented Microsoft’s September 2026 security updates are experiencing challenges with Remote Desktop Services (RDS) on Windows Server systems, leading to instability and connection failures. Issues typically arise hours after the update, causing ongoing Remote Desktop sessions to freeze, difficulties in disconnecting, and failures in establishing new connections. Affected systems include Windows Server 2012 through Windows Server 2025 and select Windows client versions, with problems such as failed RDP connections, sign-in difficulties, unresponsive management tools, and servers stalling during Remote Desktop configuration. Microsoft advises administrators to uninstall the September 2026 updates, which would remove security enhancements, and is investigating the root cause while providing Known Issue Rollback policies. For inaccessible virtual machines, restarting the affected VM is recommended as a temporary measure.

Winsage

September 14, 2026

September Patch Tuesday: 963 CVEs, 2 exploited flaws, 1 message

Microsoft has addressed 24 Common Vulnerabilities and Exposures (CVEs) in its developer tooling, with 23 classified as important and one as critical. The critical entry, CVE-2026-34182, has a CVSS score of 9.1 and affects CMS AuthEnvelopedData processing in Visual Studio versions 2017 to 2022. The highest-scoring entry is CVE-2026-81376, a security feature bypass in Visual Studio Code, with a CVSS score of 9.6. Visual Studio Code and its Copilot extensions account for ten of the CVEs, primarily related to security feature bypasses. The .NET framework has updates for SDK versions 8.0.131, 8.0.425, 9.0.121, 9.0.318, 10.0.112, and 10.0.401. Monthly rollups for the .NET Framework have been released for various operating systems, including Windows Server 2012 and Windows 10 versions. Adobe has released 963 CVEs, with 55 flagged by Microsoft as high risk, primarily in printing and fonts.

Winsage

September 14, 2026

Microsoft confirms Windows 11’s update kills audio on some PCs, and the bugs keep piling up

Windows 11 update KB5124008, released on September 8, has caused significant audio issues for users, including failure of audio devices to initialize or produce sound, and problems with microphones and multichannel audio. The update is linked to Explorer.exe crashes, disruptions in File History backups, Remote Desktop difficulties, and GPU issues on certain AMD systems. Microsoft has acknowledged these problems and indicated that the audio issues primarily affect USB Audio Class 1.0 devices. Users may see error logs in Device Manager indicating "This device cannot start (Code 10)." A temporary workaround is to switch to a 2-channel mode, and wireless audio devices appear to be unaffected. Microsoft is working on a permanent solution.