WINDOWS 11 KB5120998 UPDATE BRINGS 35 FIXES, MOUSE BUG

INDUSTRY DESK■ 1 MIN READ

MON, AUG 31, 2026

■ AI-SUMMARIZED FROM 2 SOURCES ▸ TIMELINE

Microsoft released the KB5120998 preview cumulative update for Windows 11 versions 25H2 and 24H2, delivering 35 changes across the system. The update includes improvements to core features but also triggers an issue that resets mouse settings.

The August 2026 non-security preview update addresses multiple areas of Windows 11. Microsoft focused enhancements on the Start menu, taskbar, and Windows Search functionality. However, the company confirmed that KB5120998 reverts mouse settings on affected systems after installation. Users will need to reconfigure their mouse preferences following the update. As a preview release, KB5120998 allows Microsoft to gather feedback before the changes roll out to the broader user base through final security updates. Users testing the preview should document any additional issues encountered during deployment. The update is available through Windows Update for eligible systems. Microsoft has not announced a timeline for resolving the mouse settings reset issue.

■ SOURCES

► Bleeping Computer ► Bleeping Computer

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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WINDOWS 11 KB5120998 UPDATE BRINGS 35 FIXES, MOUSE BUG

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