Gary Bacon

Apple Watch Not Unlocking a Mac

Setting up the feature that allows you to unlock your Mac with your Apple Watch ( must have OS X Sierra & iOS 10 ) has been a bit more tedious than I had anticipated. I believe this is due to a bug.

Two-factor authentication is new. This needs to be set up prior to attempting to use Apple Watch to unlock.

If you have Two-step authentication disable it first.

Pro-tip

Do not try and check the box in System Preferences > Security & Privacy before setting up Two-factor authentication correctly.

There are plenty of guides online for setting this up, however, none have pointed out the bug. I found a few other folks that had the same issues in forums.

screen-shot-2016-09-14-at-9-08-33-am

The issue is that once you check the box and authenticate, and if Two-step is still on, then OS X hides the checkbox. There is no way, that I’ve found, to re-try this.

Update: To get the checkbox back, simply reboot, reauthenticate, and it should work again.