Microsoft says Windows 11 KB5120998 update resets mouse settings
Description
Microsoft has acknowledged that the Windows 11 KB5120998 August 2026 non-security preview update causes mouse settings to be reset to default values after installation. This issue affects user-configured mouse preferences but does not represent a security vulnerability or exploit. No evidence of active exploitation or security impact has been reported.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Windows 11 KB5120998 update, released as a non-security preview in August 2026, has been confirmed by Microsoft to reset mouse settings on affected systems. This behavior reverts user-customized mouse configurations to default values following the update installation. The issue is a functional regression rather than a security flaw.
Potential Impact
The impact is limited to user experience disruption due to loss of personalized mouse settings. There is no indication of security compromise, data loss, or system integrity issues associated with this update.
Defensive Guidance
Since this is a non-security preview update causing a settings reset, users may choose to delay installation until a fix is provided. Microsoft has not indicated a security risk or provided an official fix yet. Users should monitor official Microsoft channels for updates or patches addressing this issue.
Technical Details
- Classification
- {"confidence":0.3,"severitySource":"default","classifier":"rss-v2"}
Threat ID: 6a95595facd9273b49f4017e
Added to database: 08/31/2026, 10:37:19 UTC
Last enriched: 09/09/2026, 12:09:06 UTC
Last updated: 10/04/2026, 05:46:24 UTC
Views: 72
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