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Your Apple Watch must be signed in to iCloud to...

My macbook pro (OS Sierra) stopped using my apple watch to sign in.  I've tried reclicking "Allow your apple watch to unlock your Mac" in the Security and Privacy tab of the Systems Preferences; however, I keep getting a dialog box with this notice, "Your Apple Watch must be signed in to iCloud to allow it to unlock your Mac."  My apple watch is signed into iCloud with the same iCloud account on my Mac and everything was working fine a few days ago.

Any suggestions?

I solved the problem by unpairing then repairing apple watch.

OK, so I'm not losing my mind. I'm seeing the same problem. I have a Late 2015 MBPr (macOS Sierra 10.12.1), iPhone 7 (iOS 10.1), and an Apple Watch 2 (watchOS 3.1).

My Apple ID is set up with two-factor authentication, and working fine on all devices. Both the MBPr and iPhone are connected to my N network at home, and Bluetooth is enabled. My Apple Watch 2 is on my wrist and turned on.

I get the expected Turning on... spinning cog:

Then I get this error:

I tried turning Handoff off and back on, didn't fix it.

I tried setting the iPhone to Airplane Mode, and making sure the Apple Watch 2 is connected to my Wi-Fi network, didn't fix it.

This started happening after the 10.12.1 update was applied. ¯\_(ツ)_/¯

TIA,
Don

Same problem here, just started happening after the most recent update. I've signed out and signed back in to iCloud on both my phone (and thus watch) along with my Mid 2014 MBP.

I have solved the problem for me.  I'm not sure which step worked or if all the steps must be done. Here's what I did ... I logged out of iCloud (system preferences/iCloud/signout).  Once I was completely signed out, I restarted my computer then logged back into iCloud.  (at this point you might want to see if you can turn on the "allow your apple watch to unlock your mac" button.)  If not, then continue with what I did ... Once I was signed into iCloud, I checked to make sure my two-step authentication was still active.  Then I opened icloud.com and logged in.  When I was requested to enter the code for two-step authentication, I entered the code from my iPhone.  (BTW - I get a code on my computer, and it works to get into iCloud which seems to side-step the verification system).  This time I used the code from my phone NOT my computer.  I logged out of iCloud.com and went to system preferences/security/ and was finally able to turn on the "allow your apple watch to unlock your mac" button. Hope this helps others and I really hope my computer doesn't revert back.  I would hate to have to login/out of iCloud often.

I have the same issue on a brand new (refurbished) Macbook Pro 2015. Can't turn on the Apple Watch unlock feature. I'm also running 10.12.1.

How do we fix this?

I solved the problem by unpairing then repairing apple watch.

I also fixed it at this point, it was much more painful than it needs to be though:

Sign out of iCloud on all devices (please note that this will delete Credit/Debit cards on Apple Pay which is annoying). Sign into iCloud again, turn on the unlock feature, reboot all devices and it will work.

Nice feature though, it's super fast - glad I went through the trouble to activate it.

erichungtwtw wrote:

 

I solved the problem by unpairing then repairing apple watch.

Well, that fixed it for me too. Thank you!

Thank you so much, i was able to unpair/ repair it and then it worked

Ok, after fixing this problem a week ago, my computer has reverted back with the box "Allow Apple Watch to unlock this Mac" unchecked.  Once again if I try to check the box I get the same error message "Your Apple Watch must be signed in to iCloud to allow it to unlock your Mac."  What's going on?  I don't want to do this every week.  Is Apple fixing this bug?

I've had this very frustrating issue as well. I had it working briefly on my late 2013 iMac at work, but it didn't stay working for long.

I have powered off/on my iphone 6, Apple watch and iMac multiple times, at the same time, to no avail.

I have unpaired and re-paired the Watch to my phone once, which took approximately 45 minutes, so don't want to do that again.

I have turned off/on the bluetooth and wifi on i phone and imac. No luck.

At this stage I am thinking it is because of the work wifi configuration- I believe that wifi is a necessary component of all this.

Unfortunately I don't have a recent model Mac at home so can't test this outside my work environment.

This is crazy!  The apple watch unlocking the mac keeps turning on and off.

October 31 -- can't check the Unlock this Mac box and I get the iCloud error message.  Later that day, I logged out and back into iCloud and the system worked and allowed me to check the "Allow Apple Watch to unlock this Mac" box. Everything worked for a week.

November 6 --  Apple Watch stopped unlocking the Mac and once again and the "Allow Apple Watch to unlock this Mac" box was unchecked and the error message prevented me from checking the box again.  I decided to let it go and just login with my password.

November 8 -- My computer started unlocking with my watch. The "Allow Apple Watch to unlock this Mac" box is checked once again.  (I didn't do anything)

I don't get it. I think this is bad coding that needs to be completely changed.  It obviously is not reliable. I completely give up.  If it works, then great.  If not, then I will just type my password. 

I just ran into the exact same behavior described by both of you. I even tried restarting my MacBook Pro, iPhone 7 Plus, and Apple Watch 1, but no go. It still says the watch isn't signed into iCloud. The watch works just fine and the Watch app on my phone doesn't say anything is wrong.

erichungtwtw wrote:

 

I solved the problem by unpairing then repairing apple watch.

This worked for me as well.

I solved the problem by doing this, but 1 day later it stopped working again.

Unpairing, then pairing my watch again takes about 45 minutes, so I don't want to do this again.

最后更新：2017-09-10 13:18:28

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