Windows xp – Is there a way to allow concurrent remote desktop users on XP without changing dlls?

I would like to allow concurrent users on an XP install, but I was wondering if there was a way to do it with out swapping dll’s and booting into safe mode.

(Registry changes are fine)

Solution:

No, that’s not possible. The restriction is hard coded into the terminal server dll’s provided with Windows XP. The only way to get around that is to replace them with a previous version (one of the early beta versions of Windows XP didn’t have that restriction).