|Kernel version||NT 4.0|
Microsoft Cairo is the codename of an unreleased software project by Microsoft, meant to bring next-generation technologies for Microsoft's NT Based Operating Systems. The project was originally announced at the 1991 PDC (Professional Developers Conference) and later demoed at the 1993 PDC.
- Cairo Advanced Desktop was designed as the Client for Cairo servers. It would have included the core OS, new user interface, and networked storage/printer sharing.
- Cairo Advanced Server was designed
- Cairo Development Environment