JSI Tip 0868. You can not use 32bit binary commands in AUTOEXEC.NT.

If you include a Win32 binary command in AUTOEXEC.NT, it will not run.

SUBST and the NET commands are examples of Win32 binaries.

AUTOEXEC.NT only runs 16bit binary commands.

If you must run a Win32 binary, use a batch file or logon script.