The Service Pack 6 was the last official service pack for Windows NT 4.0, this service pack addresses the other previous issues that were fix in previous service packs. This service pack came out in 2001, and at this point Windows 2000 had already spread quickly as a more secure OS, and the same year Windows XP came out taking the NT to the home desktop.
Windows NT 4.0 Service Pack 6a
File: sp6ai386.exe
SHA-256 Checksum:
d0e104b49cc451975a38c11b70bd6c9495c4ebe6a321f4b30ac0a579b5bad9cf
