Microsoft says Windows 11 KB5120998 update resets mouse settings
Microsoft confirms KB5120998 update resets mouse settings on Windows 11 systems, causing appearance regressions and animation changes.
Intelligence analysis by Qwen 2.5 (3B)

Microsoft has issued an update for Windows 11 that has caused issues with mouse settings, leading to appearance regressions and animation changes.
Microsoft made an update to Windows 11 that changed how your mouse looks. It's like if someone changed your shirt without asking you, and you can't change it back.
Analysis
{"heading":"Understanding the KB5120998 Update","subheading":"Details on the Update and Its Impact","paragraph_1":"The KB5120998 update, released on August 27, 2026, is an optional, non-security preview update for Windows 11. It includes improvements to the Start menu, taskbar, and Windows search for versions 25H2 and 24H2.","paragraph_2":"Users must click the 'Download and install' link unless they have the 'Get the latest updates as soon as they're available' option enabled, which automatically installs the update.","paragraph_3":"Microsoft has received reports of users experiencing issues with mouse settings after installing the update. Mouse cursor personalization settings are either being changed or reset to standard settings, leading to appearance regressions and intermittent animation changes.","paragraph_4":"Some users have reported that high-DPI mouse cursors are replaced with larger, white cursors, and custom cursor animations revert to standard settings. Attempts to restore previous cursor customizations are unsuccessful."}
Key points
- KB5120998 update released on August 27, 2026
- Users must manually download and install the update
- Issues include appearance regressions and animation changes
- Users can't restore previous mouse settings
- Microsoft is investigating the root cause
Microsoft is investigating the root cause and asking affected users to file a report via the Feedback Hub.
Affected users may lose their custom mouse settings and may not be able to restore them.


