If you use the Winaero Tweaker app, a Reddit user, RemarkableOil451, has put out a warning about using the software on Windows 11 over dangerous Reset to Defaults settings that can cause system corruption on Microsoft"s newest OS. According to the Redditor, pressing the "Reset this page to defaults" button in the Advanced Appearance module executes an immediate, persistent registry write without asking the user for confirmation.
The reset function in Winaero Tweaker injects legacy binary values (static 9pt Segoe UI) into the Windows 11 Registry Keys. This legacy data conflicts with Windows 11"s native Accessibility subsystem by overriding the Text Size scaling and rendering the UI illegible on high-DPI displays.
If you manage to muck up your system settings, the Redditor reports that manually deleting the injected registry values does not fully resolve the issue, with the font face bring broken entirely, forcing a system-wide fallback to Arial. While unconfirmed, the Redditor thinks that the app might inject hidden dependencies elsewhere, perhaps FontSubstitutes, that survive cleanup.
To restore their Windows 11 back to a fully normal state, RemarkableOil451 had to perform a full system restore. While the OP didn"t realize it at the time, as it was later mentioned in the comments, there is a way to fix the issue without a full system restore. Apparently, you can do the following steps to get your system back to normal:
-
Delete the
HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetricskey via Registry Editor. - Go into Windows Settings, Display, and set the scaling to an arbitrary value (e.g., 175%).
- Sign out and sign back in to force the OS to "recompute" the default values.
- Then restore the original scaling.
If you are using Winaero Tweaker then, be sure not to restore the defaults as you"ll end up with extra work on your hands, though, it"s not as catastrophic as needing to do a system restore. To be honest though, if you are not happy with your system screwing up, perhaps using a tweaker to make unofficial changes isn"t the best idea.