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Windows 11 KB5120998 Update Bugs
Microsoft confirms that the optional Windows 11 update KB5120998 is breaking mouse cursor personalization and wallpapers, with uninstalling the update as the only current workaround.
- Microsoft Confirms Windows 11 Update KB5120998 Is Breaking Mouse Cursors and Wallpapers
Microsoft has acknowledged that its optional Windows 11 update KB5120998, released August 27, 2026, is causing cursor personalization settings to revert and, in some cases, wiping out custom wallpapers. The company says it is investigating, but the only current fix is to uninstall the update.