Microsoft Anti-Virus for Windows

Microsoft Anti-Virus (MSAV) is an antivirus software program introduced by Microsoft for its MS-DOS operating system. The program first appeared in MS-DOS version 6.0 (1993) and last appeared in MS-DOS 6.22. The first version of MSAV was basic, had no built-in update mechanism (updates had to be obtained from a BBS and manually installed by the user) and could scan for 1,234 different viruses. A front-end application, called Microsoft Anti-Virus for Windows (MWAV), was included as part of the package and allowed MSAV to run properly on Windows 3.1x.

Microsoft Anti-Virus for Windows