Unlocking Mac Pro with Apple Watch

You're supposed to open up System Preferences (on your MacBook), go to Security & Privacy, and then check the box that says "Allow your Apple Watch to unlock your Mac". And this didn't work for you?

Is your Apple Watch under the same Apple ID as your MacBook? If not, that's why it's not working. Otherwise... I really don't know.

This article from MacRumours is helpful because it has pictures with it: http://www.macrumors.com/how-to/macos-sierra-apple-watch-unlock/

Try going to the Watch app on your iPhone and choose General -> Apple ID and make sure it says you're signed in. Then try restarting your Watch.

I'm having the same problem. There were two radial boxes in System Preferences on my MBP when I started this process earlier today...but now they are gone.

Make sure you've enable two-factor authentication for your Apple ID. I did a little digging and found out that's a requirement for it to work.

To do this on your MacBook:

Open system preferences > click on iCloud > click on Account Details > click on the Security tab > click the option to turn on Two-Factor Authentication, and provide any information that is asked for.

After you've done this, try going to Security & Privacy again and see if it works this time.

I have had the same problem repeatedly...with a Watch 2 and a Macbook Pro early 2015.

It was recently resolved by turning Bluetooth off and on...another more recent time, it was resolved with help from an Apple Support person who went through my MacBook Pro and checked ALL settings were right plus all were right on the Watch 2 too.

After logging out of my iCloud account on my MacBook Pro, then logging back in (plus restarting my MacBook Pro), my Watch 2 started unlocking my MacBook Pro again.

Two days later, though, Unlocking failure happened again.

I am going through more typing to unlock my MacBook Pro WITH the Apple Watch 2 than I would be without it....epic fail :-/