I’ve been unable to connect to my iMac running Mojave with my MacBook Pro, which is still on High Sierra, and I’m not the only one. It looks like it is not just a case of switching smb on, which was suggested in one Apple discussion thread:
I already had smb switched on on both machines, and switching off afp did not solve the problem. It turns out that it also affects machines that both run Mojave:
This apparently started with the latest Mojave update (10.14.5), which I also installed. File sharing works OK the other way around (starting the connexion from the iMac), but I synchronize folders between the two machines from my MacBook, so a connexion from the iMac is not a solution.
My workflow is quite hampered at the moment. Could some attention in TidBITS spur Apple to fix this problem soon?