I want to massively remove all users from my Windows Small Business Server 2003 installation except
Guest. They are too many to remove them one-by-one. It takes a lot of time.
Is there a way to remove these users massively?
If you go to your Active Directory Users and Computers console (under Administrative Tools), you should be able to select multiple users inside a single OU and delete them all at once:
This should make it a lot quicker.
(that screenshot was taken on an SBS2011 machine, but it's pretty much the same on 2003).