MSCDEX VERSION 2.21 RELEASE NOTES: This version fixes a bug introduced with MS-DOS 5.0 that did not allow network sharing of CD-ROM drives. In addition, MSCDEX v2.21 can now be used with all versions of MS-DOS from 3.1 to 5.xx. It is no longer necessary to use SETVER.EXE in MS-DOS 5.0 to run MSCDEX.EXE. This is for update of existing versions only.