Windows NT 3.1 Advanced Server was released on July 27, 1993[citation needed] as an edition of Windows NT 3.1, an operating system aimed towards business and server use.

Unlike the latter, however, Windows NT 3.1 Advanced Server was a complete operating system that did not need to be run from DOS.

It introduced TCP/IP and Winsock support integrated into the operating system, alongside the ability to use FTP.

[citation needed] In 1995, Microsoft released Windows NT Server 3.51, an update to Windows NT Server 3.5, which added NTFS compression and support for the PowerPC architecture.

[citation needed] In 1996, Microsoft released Windows NT Server 4.0.

It added the new user interface introduced in Windows 95 the previous year.

In addition, it dropped support for the PowerPC, Alpha, and MIPS architectures.

Microsoft updated Winsock to version 2 and IIS 2.0 and FrontPage are included.