Windows NT 4.0 build 1381.335

Windows NT 4.0 build 1381.335 is the Service Pack 6 release of Windows NT 4.0, which was released on 27 October 1999. This was the last version of Windows NT for Alpha-based systems, but Alpha development continued until Windows 2000 build 2128.1 (RC2). A checked/debug version also exists, but has yet to be found.