command is not available on Windows XP 64-Bit Edition. DOSBox In DOSBox, the command is used to view and set the reported DOS version. It also displays the running DOSBox version. The syntax to set the reported DOS version is the following: VER SET <MAJOR> [MINOR] The parameter MAJOR is the number before the period, and MINOR is what comes after. Versions can range from 0.0 to 255.255. Any values over 255 will loop from zero. (That is, 256=0, 257=1, 258=2, etc.) Others AmigaDOS provides a version command. It displays the current version number of the Kickstart and Workbench. The DEC OS/8 CCL ver command prints the version numbers of both the OS/8 Keyboard Monitor and CCL. Syntax C:\WINDOWS\system32>ver Microsoft Windows [Version 10.0.10586] Some versions of MS-DOS support an undocumented /r switch, which will show the revision as well as the version. Version list The following table lists version numbers from various Microsoft operating systems: See also Comparison of Microsoft Windows versions List of DOS commands uname References Further reading External links ver | Microsoft Docs How to find Windows version, service pack number and edition from CMD How to determine what version of Windows you are running in a batch file Internal DOS commands MSX-DOS commands OS/2 commands ReactOS commands Windows commands Microcomputer software Windows administration