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@andrewrocco
Created September 25, 2016 19:27
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Allowing the Apple Watch to unlock a Mac
1. Update everything to the latest respective OS.
2. If 2-Step Verification is in use with your AppleID, turn it off.
3. Every device will freak out
4. Turn on 2-factor Authentication for your AppleID through System Preferences > iCloud > Account > Security (or from the Settings app on iOS)
5. Every device will freak out
6. Sign in and authenticate on every Mac and iOS device you use
7. Security pref pane may show option to allow Apple Watch to unlock your Mac but it may not work yet ("unable to communicate with Watch" error may appear)
8. Toggle Handoff setting on iPhone and Watch
9. Try to check the Allow Apple Watch checkbox again
10. Still may not work
11. Unpair Watch from iPhone. Pair again.
12. Try checkbox again, but it may not work
13. Jiggle the handle
14. Sign in to iCloud in Messages/FaceTime on the iPhone and Mac.
15. Try again. Success?
16. For some reason, this worked for me.
17. This only took three hours to diagnose.
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