Microsoft confirms mouse bug hits only non-English Windows 11 PCs
Microsoft has acknowledged that installing the August 2026 preview update KB5120998 can unexpectedly reset mouse settings—but only on Windows 11 PCs running non-English language versions. The issue does not appear to affect systems set to English, narrowing the scope of affected users to localized Windows installations.
A localized glitch with global reach
The bug is documented in Microsoft’s official release notes for KB5120998, where it is listed as a known issue that may revert pointer acceleration, sensitivity, or primary button settings after installation. While the company has not detailed the root cause, it suggests the problem is tied to language-specific configurations in the update’s code or deployment logic. Users on English-language Windows 11 systems can proceed with installation without this concern, but those on other language builds face a potential disruption to their workflow.
Workaround available, official fix pending
Microsoft advises affected users to revert to a previous system restore point or manually reconfigure their mouse settings following the update. A permanent resolution is expected in a future Windows 11 cumulative update, though no specific timeline has been provided. The company has not indicated whether the bug will expand to English systems in later releases, leaving administrators of multilingual environments to monitor updates closely.
Why it matters
This localized bug highlights how even minor language-specific quirks in system updates can ripple through enterprise and consumer workflows. For IT teams managing non-English Windows deployments, the issue underscores the importance of staging updates and verifying compatibility before broad rollouts. While English users remain unaffected for now, the episode serves as a reminder that seemingly small updates can introduce hidden friction—especially in diverse, globalized tech environments.
Source: BleepingComputer. AI-assisted editorial synthesis — TechnoExpress.