Some older features were removed, like CGA graphics support (although Windows 3.0's CGA driver still worked on 3.1) and compatibility with real-mode Windows 2.x applications.
Beberapa fitur yang lebih tua telah dihapus, seperti CGA dukungan grafis (meskipun Windows 3.0 CGA driver masih bekerja pada 3.1) dan kompatibilitas dengan real-mode Windows 2.x aplikasi.