| Codename | Kato, Sparta | 
| Kernel | 3.1 | 
| Architectures | 16-Bit | 
| Languages | 
 | 
| Release date | 27/10/1992 | 
| Support date | 31/12/2001 | 
| Extended date | 01/01/1970 | 
| Replaces | Microsoft Windows 3.1 | 
| Replaced | Microsoft Windows for Workgroups 3.11 |