Did you change the system font inadvertently on your Windows computer, and now the user interface looks ugly?
Cause
The above issues occur if one or more system fonts (e.g., Segoe UI, Segoe Fluent Icons, etc.) have been replaced by a third-party font installed on your computer.
This article provides the registry fixes to reset the default system font settings for computers running Windows 7, 8, 10, or 11.