Mac screen sharing won’t work? Disable it! Then turn it back on

It’s a sad thing that after so many years of offering screen sharing as a native feature in OS X and then macOS, the remote-access service remains unreliable. I have two Macs in my house on the same network—one a laptop, one a desktop—and it’s often the case that the two can see each other and mount each other’s drives, yet can’t initiate screen sharing.With Big Sur, I recently noticed that when I was unable to connect from one machine, the one that wouldn&rs