I have been using Multiplicity 3.57 without problems on two PCs - a Primary and a Secondary both running Windows 11 21H2.  I recently upgraded the Primary to 22H2 and Multiplicity ran perfectly.

However, when I upgraded the Secondary to 22H2, the Primary can no longer communicate with the Secondary unless the Public Firewall is Off.

Can anyone tell me why this is? All the FW settings are exactly as I had them before the update to 21H2 so I don't see what's changed.

As I said, the Primary running 22H2 talks to the secondary through the FW so I'm guessing this is a problem with the Secondary. Any advice would be appreciated.

TIA