FMPro Win sees Mac database but won't connect (coffee cup)
I have a Mac running FMPro 8.0v3 and a Windows user running 9.0v3. The Windows user is connecting to the Mac's network over a VPN and can see the Mac host using Favorite Hosts and choose the relevant database. When they click open, they get the coffee cup pointer for about 30 seconds and then it returns to being the arrow with no error message.
Is there a log I can find more valuable debugging information?
I have added the FileMaker Pro application as an Exception to the Windows Firewall, and from the Mac running TCP dump, I see the Windows computer initiate a connect starting with 1074 to the Mac on 5003. The Mac responds and after a few packets exchanged, the Windows computer goes to the next highest port, 1075, etc.
The Windows machine has temporarily disabled virus protection to no avail, and from the Mac, I can port scan the windows PC and see all sorts of open ports including 5003.
What could be the cause? Could this be a version mismatch issue? Most likely not as a Mac running 9.0v3 can still happily connect to the Mac running 8.0v3.
Is there any log with more detailed debugging info on the Mac or PC?