File History

Winsage
October 4, 2026
In October 2026, Microsoft is addressing ongoing issues from its September updates for Windows 11, particularly related to audio decoding. Certain applications and games using Windows' built-in AC-3 (Dolby Digital) audio decoding may crash when users adjust volume or audio settings. This issue primarily affects older applications and games, while most modern apps are expected to function normally. Microsoft has issued multiple updates, including a mandatory Patch Tuesday update and an emergency patch, but some audio problems remain unresolved. The September updates also introduced a significant increase in security fixes, addressing 974 vulnerabilities compared to 86 in September 2025. Additionally, an emergency update disrupted the functionality of File History, which Microsoft is investigating. An optional update aimed to fix File History but led to new crashes in various applications. Microsoft is currently working on a resolution for the audio-decoding bug without a specified timeline.
Winsage
October 4, 2026
On September 22, 2026, Microsoft released the optional Preview Update KB5124010 for Windows 11 versions 24H2, 25H2, and 26H2, aimed at enhancing performance and addressing various issues, with broader distribution planned for October 2026. User feedback indicated concerns about complications from the update. A user reported that applications were crashing due to issues with the library file msmpeg2ac3dec.dll when multiple MP3 files were played simultaneously, affecting older games like SimCity 4 and Fallout New Vegas. The user's company’s telephone system, using innovaphone, also experienced crashes with the myApps client. The msmpeg2ac3dec.dll file was found only on systems upgraded from Windows 11 22H2, while fresh installations of 24H2 or 25H2 did not include it. A workaround involving the installation of "LAV Filters" was tested and found to resolve the crashing issue. Microsoft acknowledged the issues related to the Preview Update KB5124010, stating that applications requiring AC-3 audio decoding might close unexpectedly and that they are working on a resolution for this problem in a future update.
Winsage
September 25, 2026
The September update for Windows 11 caused significant disruptions, including failures in USB audio functionality and the File History feature. This follows a trend of issues over the past months, with August experiencing printer and PDF problems, July affecting certain Dell PCs, and June reporting startup issues and BitLocker recovery failures. In total, eight out of nine months this year have had at least one major issue. A recurring BitLocker user lockout problem has also been noted. Despite these issues, Windows 11 has improved in overall stability, with fewer system crashes. Windows 10 has maintained stability by focusing solely on security updates since support ended in October 2025, avoiding new feature rollouts. Users satisfied with Windows 10's features may prefer to stay with it for stability. Windows 11 users facing instability can roll back updates or use the Known Issue Rollback feature to revert problematic non-security features.
Winsage
September 25, 2026
Microsoft has released the KB5124010 September 2026 non-security preview update for Windows 11 versions 24H2 and 25H2, introducing 46 enhancements, including improvements to Bluetooth functionality and the ability to remap the Copilot key. This update is optional and focuses on quality improvements without security fixes. Key features include support for Emoji 17.0, a new accessibility setting for maximizing app windows, and a recovery remote management plug-in. Bluetooth issues have been addressed, including crashes related to audio streaming and microphone compatibility. Users can remap the Copilot key to function as the Right Ctrl or Context Menu key. The update elevates Windows 11 25H2 and 24H2 devices to builds 26200.9550 and 26100.9550, respectively. Other highlights include the ability to use slideshow wallpapers across multiple desktops, enhanced gesture controls for precision touchpads, and a Camera roll backup feature for OneDrive. Microsoft has fixed a known issue with the File History backup feature and removed the PC-to-PC Migration tool, recommending Windows Backup instead. KB5124010 is the last preview update for Windows 11 24H2, which will reach end of support in October 2026.
Winsage
September 24, 2026
Microsoft has released preview updates for Windows 11 versions 24H2, 25H2, and 26H1 as part of its Week D schedule. Users of versions 24H2 and 25H2 can install the preview cumulative update KB5124010, updating their systems to builds 26100.9550 and 26200.9550, respectively. Enhancements include refinements to File Explorer, support for Emoji 17.0, a new Tips widget, improved desktop backgrounds, enhanced Bluetooth functionality, upgrades to the Settings app, additional touchpad gesture controls, new key remapping options in Copilot, and Wi-Fi support in the Windows Recovery Environment. The final monthly update for Windows 11 version 24H2 will be shipped next month, with the version set to reach the end of its support lifecycle on October 13, 2026. Users of version 26H1 can install the preview cumulative update KB5124006 to upgrade to build 28000.3086. This update includes a resizable Taskbar, customizable Start menu, revamped Windows Search, improvements to File Explorer, enhanced progress indicators, and better app update support.
Winsage
September 24, 2026
Microsoft has informed IT administrators about potential connection challenges with the Always On VPN after the September 2026 Windows 11 security updates. Users may face difficulties connecting to their organization's network, particularly if the VPN is set to automatically attempt an alternative connection method upon failure. Symptoms include connections remaining in a 'Connecting' state or displaying the error message: 'The specified port is already in use.' Affected versions include Windows 11, version 26H1 (KB5124012), version 25H2 (KB5124008), and version 24H2 (KB5124008). A temporary workaround involves adjusting the Always On VPN profile from automatic protocol selection to a single protocol (SSTP or IKEv2). Microsoft is also addressing various other issues related to Hyper-V, Remote Desktop Services, USB audio, and the File History backup feature.
Winsage
September 22, 2026
Users of Windows PCs with AMD Radeon GPUs, including models such as RX 6600, RX 7700 XT, RX 7800 XT, RX 7900 GRE, RX 7900 XTX, and RX 9070 XT, may experience persistent issues until October 13th, 2026. These issues include error messages in Device Manager (Code 10), absence of audio output, unresponsive volume controls, inaccessible sound settings, and failures in multi-channel or 3D audio features. Additional problems reported are driver timeouts, black screens, missing displays, and system crashes. Issues with File Explorer and File History have emerged after September's Patch Tuesday updates, affecting the creation and accessibility of backups. Some problems have been resolved through an emergency update, including fixes for Claude Cowork and Remote Desktop Services, and a misleading Defender warning.
Winsage
September 21, 2026
Windows 11 is set to enhance its accessibility features, particularly with the Magnifier tool, introducing a new contrast theme that reduces glare without altering the colors of photos, videos, and charts. Users can activate this feature via the Magnifier toolbar and customize their preferences in the Accessibility settings. The Cloud rebuild feature will allow users to restore their PC to a clean state with options to sanitize drives during the process. IT administrators can also initiate a Cloud rebuild remotely. Live Captions will receive an update to include a setting that excludes audio from screen readers. Issues with Hyper-V related to sharing host folders with Linux VMs have been resolved. Additionally, a problem with File History backups failing has been fixed. Many of these updates have already been released to Insiders in the Beta Channel, and changes regarding Cloud rebuild are active in the Experimental Channel.
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