>I have a fairly large VFP EXE on the network and the users actually run a copy from their local workstation.
>
>It is a little slow to load (not too bad) so occasionally users click it AGAIN thinking it did not load the first time.
>
>I do not think it actually hurts anything, but I would prefer that the user NOT be running two copies on the workstation at same time.
>
>How can I Prevent Running two copies on same Work station?

Arthur gave you the base code. I originally wrote an article using this for FoxPro Advisor. You can read it at: http://foxproadvisor.com/doc/05263 and http://foxproadvisor.com/doc/05351 for an update.