- In the Personalization control panel, it is not possible to save changes to an existing theme. Changes made after choosing a theme must be saved again and the original theme deleted to prevent duplication. In previous versions of Windows, a theme file could be overwritten with the modified theme.
- It is no longer possible to change a theme's visual style, like from Windows Aero to Windows Classic, directly.
- The Aurora, Windows Energy and Windows Logo screensavers and most of the wallpapers that shipped with Windows Vista were removed.
- The 3D-Bronze, 3D-White, Conductor, Dinosaur, Hands 1, Hands 2, Variations and Windows Animated cursor schemes are no longer available.
- ClearType cannot be turned off entirely in order for the user interface font, Segoe UI, to maintain optimal design for certain shell components and Windows Explorer. Parts of the user interface (such as the start menu and Explorer) still use ClearType regardless of setting.
Read more about this topic: List Of Features Removed In Windows 7