HI, Iv'e got the same pb with my Vista machine. I tried to copy "p=" or "i=" key part of link generated on my 2.0 Sync machines but it stays in "approval pending" state. I managed to create a working link in the other way: from my 1.4 app to the 2.0 sync machine, so pc see each other well, Sync apps are working well, but that's not the way i need to sync. I have a 2.0 sync server !! Thanks all for helping us.