After having this problem since the beginning, I've discovered that the only way to make wifi sync connection work is to first browse to the UPnP MM server and then try to sync. The sync works fine if I follow that procedure, but never before first browsing via UPnP. Does this sound like sound type of bug?

That's what I had thought, but it doesn't work when I open that port for TCP connections.

I presume it is the port you have set in MMW (under Tools > Options > Media Sharing).

I figured out that my connection failed errors (which happen all the time) are related to Kaspersky firewall rules. I'm trying to determine the best way to allow MMA to access MMW during synchronization. Does MMA/MMA use a specific set of ports for its connection so that I can create a firewire rule to allow the connection? If not, is there a better way to allow access? Thanks