MICROSOFT SEPTEMBER UPDATES FIX MOUSE SETTINGS BUG

INDUSTRY DESK■ 1 MIN READ

TUE, SEP 15, 2026

■ AI-SUMMARIZED FROM 5 SOURCES ▸ TIMELINE

Microsoft has patched a widespread issue that reset mouse settings on Windows 11 systems after installing August's KB5120998 preview update. The fix arrives in September's monthly updates.

The mouse settings reset affected multiple Windows 11 users following the KB5120998 August 2026 preview release. Microsoft has confirmed the issue is resolved in its latest September update cycle. This fix is part of Microsoft's broader effort to address bugs introduced by its record-breaking September patch Tuesday, which patched nearly 1,000 vulnerabilities. That update also triggered problems with Remote Desktop Services, Hyper-V folder shares on Linux virtual machines, and USB audio devices on some Windows versions. Microsoft released emergency out-of-band updates to address the most critical failures before rolling out additional fixes through standard monthly updates. Users experiencing mouse setting resets should install the latest September patches to resolve the issue. The company continues to balance security patching with stability as it manages an expanding attack surface across its Windows ecosystem.

■ SOURCES

► Bleeping Computer ► Hacker News ► The Verge ► Bleeping Computer ► The Verge

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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MICROSOFT SEPTEMBER UPDATES FIX MOUSE SETTINGS BUG

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