This will usually fix it.
http://support.microsoft.com/kb/239924
Gerry Champoux
Williams International
Walled Lake, MI
In Reply to Jim Van Dragt:
Good Day All,
I have a laptop with it's own ProE license server. It has a wireless network interface, a normal LAN interface and a 1394 interface, which I believe is firewire.
If I have the LAN cable connected ProE starts quite quickly, but if I disconnect the LAN cable it can take 30 minutes for ProE to startup.
I've opened a call with PTC but I'm just guessing this group will give me an answer faster.