Microsoft's Latest Update Quietly Resets Mouse Settings—But Only for Some Users

Michael Miller · 2026-09-03

You know that feeling when you sit down at your PC, ready to get some work done, and suddenly your mouse feels... off? The cursor is moving at the wrong speed, the buttons are swapped, or your carefully tuned scroll wheel is acting like it has a mind of its own. It's annoying, right? Well, a growing number of Windows 11 users are reporting exactly that after installing Microsoft's latest preview update. The culprit is KB5120998, an August 2026 preview update that was supposed to bring improvements and fixes. Instead, for a specific group of users, it's reverting mouse settings back to their defaults. Microsoft has now confirmed the issue, but here's the twist: the company says it only affects non-English systems. If you're running an English version of Windows 11, you're probably in the clear. But for everyone else, it's a frustrating puzzle that requires a bit of manual work to solve. ### What Exactly Is Happening? According to Microsoft's official documentation, the bug triggers a reset of your mouse configuration after the update installs. That means any custom settings you had—like pointer speed, button assignments, or double-click sensitivity—are wiped clean and replaced with the default values. For professionals who rely on precise cursor control for graphic design, video editing, or even competitive gaming, this can feel like a major setback. The issue seems to stem from how the update handles certain language-specific registry keys. Non-English versions of Windows 11 store some configuration data differently, and the update's logic doesn't account for those variations. As a result, it overwrites your settings instead of preserving them. Microsoft hasn't provided a timeline for a permanent fix, but they've acknowledged the problem and are working on a solution. ### Who Is Affected and How Do You Fix It? If you're using a non-English version of Windows 11 and you've noticed your mouse acting strangely after installing KB5120998, you're not alone. Here's what you need to know: - **The bug only impacts non-English systems**—so if your OS is set to English, you can breathe easy. - **Your settings are not lost forever**—they're just reset to default. You'll need to reconfigure them manually. - **A system restore might help**—if you have a restore point from before the update, rolling back could save you time. - **Check for a new update**—Microsoft is likely to release a patch soon, so keep an eye on Windows Update. To fix your mouse settings right now, head to Settings > Bluetooth & devices > Mouse. From there, you can adjust pointer speed, scroll direction, and button configuration. It's a bit tedious if you had a complex setup, but it's a temporary workaround until Microsoft ships a proper fix. ### Why Does This Matter for Power Users? For most people, a mouse reset is a minor inconvenience. But for professionals who depend on muscle memory and precise input, it's a different story. Think about a digital artist who has their pen pressure mapped to specific buttons, or a financial trader who uses a multi-button mouse to execute trades in milliseconds. Losing those settings isn't just annoying—it can impact productivity and even your bottom line. This situation also highlights a broader truth about software updates: they're never truly one-size-fits-all. Even a well-tested patch can behave differently across languages, hardware configurations, and user preferences. It's a reminder to back up your settings regularly, especially if you rely on niche configurations. > "The best way to avoid update headaches is to stay informed and be ready to adapt," says a Microsoft spokesperson. "We apologize for the inconvenience and are committed to resolving this quickly." ### What Should You Do Next? If you haven't installed KB5120998 yet and you're using a non-English Windows 11 system, you might want to hold off. You can pause updates temporarily in Windows Update settings to avoid the headache. If you've already installed it and your mouse is misbehaving, take a few minutes to reconfigure your settings. It's not ideal, but it's the only workaround available right now. Microsoft has promised to address the issue in a future release, so stay tuned for updates. In the meantime, consider creating a restore point before installing any future preview builds. It's a small step that can save you a lot of frustration down the road. Have you been affected by this bug? Drop your experience in the comments below—it's always helpful to hear how others are handling it.