I'm trying to connect computer A and computer B. A is a 2011 MacBookPro running 10.13.3. B is a 2020 M1 iMac running 14.3.1. I have the same usernames for my accounts on all of my machines. I have no trouble on B connecting to A. Works flawlessly. I can access all my files and folders on A, when using B. But when I try to connect to B from A, by selecting B in the Network menu, I get "Connection Failed". I try to "Connect As" in that window, but it refuses to respond to that request. I'm not asked for any input, Nothing happens. Oddly, from A, I have no trouble screen sharing when I select B in the Network window, and then hit "Share Screen". On A, I can then see the screen on B just fine. So A certainly knows that B is there."File Sharing" is enabled on both machines. A just won't connect to B in the Finder for file sharing. These machines are both connected to the same router, which is why each machine shows up in their Finder sidebars. They're on the same network. FWIW, I can easily connect to A and B from computer C in another room. Also FWIW, I can easily connect to C from A and B, and I can easily connect to C from B. There are no Firewalls set up anywhere, BTW.
So what am I doing wrong? How can I connect to B from A? I'm told "Connection Failed", but I have no idea why.
So what am I doing wrong? How can I connect to B from A? I'm told "Connection Failed", but I have no idea why.