A Mandatory Profile is a profile that the user does not have the ability to overwrite. During the user's session, it may be possible to change the desktop environment, however, as the user logs out all changes made will be lost. If it is desired to not allow the user any ability to change the desktop environment, then this must be done through policy settings. See the previous chapter.
For MS Windows NT4/200x/XP, the above method can also be used to create mandatory profiles. To convert a group profile into a mandatory profile, simply locate the NTUser.DAT file in the copied profile and rename it to NTUser.MAN .
For MS Windows 9x/ME, it is the User.DAT file that must be renamed to User.MAN to effect a mandatory profile.