The primary Windows platform for running Apache 2.0 is Windows NT. The binary installer only works with the x86 family of processors, such as Intel and AMD processors. Running Apache on Windows 9x is not thoroughly tested, and it is never recommended on production systems.
On all operating systems, TCP/IP networking must be installed and working. If running on Windows 95, the Winsock 2 upgrade must be installed. Winsock 2 for Windows 95 can be downloaded from here.
On Windows NT 4.0, installing Service Pack 6 is strongly recommended, as Service Pack 4 created known issues with TCP/IP and Winsock integrity that were resolved in later Service Packs.