OS SecurityBleeping Computer
4.0 — MEDIUM
Microsoft says Windows 11 KB5120998 update resets mouse settings
Microsoft has confirmed that mouse settings are being reverted on Windows 11 systems after installing the KB5120998 August 2026 non-security preview update. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A non-security update, KB5120998, installed on Windows 11 systems is reverting mouse settings, causing appearance regressions and intermittent animation changes, with affected users unable to restore previous customization.
⚙️Technical Details
Affected Systems
Windows 11
Attack Vectors
Automatic installation of non-security update KB5120998
💥Impact Assessment
Severity: Medium
Who Is at Risk
Users of Windows 11 systems with automatic updates enabled
🛡️Recommended Actions
1Disable automatic updates for the KB5120998 update
2Manually install and verify the update before enabling automatic installation
3Monitor system behavior and report any issues to Microsoft
📦Affected Products
Windows 11
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