Problems with "Use your Apple Watch to unlock apps and your Mac" function of macOS?
(In the "Security & Privacy" section of System Preferences.)
Seeing an error message like "Your Mac was unable to communicate with your Apple Watch"?
Maybe it was working before, and suddenly isn't?
Maybe you recently reset you Apple Watch? (That was the precipitating event for me.)
It took me some digging to find, so hopefully these extra breadcrumbs here, help more folks to this signal boost, for the good folks at macrumors.com, who solved the problem.
