Limitations Using SET Commands in AUTOEXEC.BAT File

SUMMARY

When you log on to a Windows NT machine, Winlogon processes the AUTOEXEC.BAT file to set your environment variables and the PATH.

However, the following restrictions apply to all SET statements:

• Conditional set ("IF") statements are not processed.
• Environment variables cannot be removed (unset). For example, "SET WORKDIR=" does not remove the WORKDIR environment variable.

In short, only SET and PATH statements are processed.