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davidholliday

macrumors regular
Jun 15, 2017
155
512
It’s currently working for me with the 7.1 beta and latest betas of MacOS and iOS.

Yeah, last time I need that claim, a new update broke it again. Hopefully fixed for good this time.

adaaf175986395652af24eff88fc4e0a.jpg
 
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Jens_Krueger

macrumors newbie
Jul 18, 2018
1
1
Morgan Hill, CA
My Watch unlock stopped working when I updated to macOS Big Sur 11.0.1 Beta 1. I've tried all the steps outlined on page 1 here, but it wouldn't go through and re-activate unlock with Watch.

Before it always took a few seconds when activating unlock with Watch while communicating with iCloud but now it failed immediately. Since someone mentioned iCloud authentication issues here in this thread I've tried changing my Apple ID password through System Preferences and voila: It worked. It took again a few seconds to communicate with iCloud and then activated Watch to unlock with no issues.

Must be some caching issue with storing iCloud passwords.

Just FYI.
 
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Ladyc0524

macrumors regular
Aug 31, 2014
196
381
My Watch unlock stopped working when I updated to macOS Big Sur 11.0.1 Beta 1. I've tried all the steps outlined on page 1 here, but it wouldn't go through and re-activate unlock with Watch.

Before it always took a few seconds when activating unlock with Watch while communicating with iCloud but now it failed immediately. Since someone mentioned iCloud authentication issues here in this thread I've tried changing my Apple ID password through System Preferences and voila: It worked. It took again a few seconds to communicate with iCloud and then activated Watch to unlock with no issues.

Must be some caching issue with storing iCloud passwords.

Just FYI.

This worked for me also. Thank you!
 
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loopy123

macrumors member
Aug 9, 2018
50
74
I am on 11.0.1 GM.
I repeated the steps twice, rebooting both times. Still no joy

error 16:15:40.247872-0800 sharingd Watch missing LTK and is unable to communicate with Companion to potentially sync it
default 16:15:40.248013-0800 sharingd Pairing lock session notifying delegate with error: Error Domain=SFAutoUnlockErrorDomain Code=196 "Your Mac was unable to communicate with your Apple Watch." UserInfo={SFAutoUnlockManagerErrorBody=Make sure your Apple Watch is unlocked and on wrist, and your iPhone is unlocked., NSLocalizedDescription=Your Mac was unable to communicate with your Apple Watch., SFAutoUnlockManagerErrorTitle=Your Mac was unable to communicate with your Apple Watch.}
 
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loopy123

macrumors member
Aug 9, 2018
50
74
I am on 11.0.1 GM.
I repeated the steps twice, rebooting both times. Still no joy

error 16:15:40.247872-0800 sharingd Watch missing LTK and is unable to communicate with Companion to potentially sync it
default 16:15:40.248013-0800 sharingd Pairing lock session notifying delegate with error: Error Domain=SFAutoUnlockErrorDomain Code=196 "Your Mac was unable to communicate with your Apple Watch." UserInfo={SFAutoUnlockManagerErrorBody=Make sure your Apple Watch is unlocked and on wrist, and your iPhone is unlocked., NSLocalizedDescription=Your Mac was unable to communicate with your Apple Watch., SFAutoUnlockManagerErrorTitle=Your Mac was unable to communicate with your Apple Watch.}
Changing my iCloud password fixed the problem...
 

Yuri Stepanov

macrumors newbie
Sep 24, 2020
2
0
I've finally fixed it! I found a bunch of errors related to "AutoUnlock" in the Console that was hinting to me that there was some invalid state on my Mac with keys and plists not being reset properly. After clearing/resetting them, I can now successfully pair my watchOS 7 Series 3 to macOS 10.15.6.

Steps (follow at your own discretion)
  1. Open "Keychain Access"
  2. In "View", enable "Show Invisible Items"
    View attachment 954412
  3. Search for "Auto Unlock"
  4. You should see a whole bunch of application passwords for "Auto Unlock: XXXX's ..."
    View attachment 954403
  5. Select all records and delete (this will reset/disable auto unlock on other Macs if you use multiple Macs)
  6. Whilst still in "Keychain Access", search for "AutoUnlock" (no space)
  7. There should be 4 entries for "tlk" "tlk-nonsync" "classA" "classC"
    View attachment 954382
  8. Select 4 records and delete (don't worry if they re-appear, the system repairs this automatically)
  9. Open "Finder" and navigate to "~/Library/Sharing/AutoUnlock"
  10. There should be two files "ltk.plist" and "pairing-records.plist"
    View attachment 954386
  11. Delete both files
    (Some users have reported better success restarting macOS at this stage)
  12. Open "System Preferences" and try enabling auto unlock. You may need to enable it twice, the first attempt will fail.
When I installed Big Sur I met the same problem, but the solution a little bit changed, because in previous worked for Catalina, but for for Big Sur did not. After step 11 (reboot mac) I had to sign out Apple ID and sign in back and it helped.
Thank you very much again for your solution!
 

TeToslaw

macrumors regular
Jun 17, 2013
113
11
**** - after upgrading to the newest betas unlocking Mac doesn’t work again ? C’mon Apple I’m not gonna change the password every single time - it’s so much frustrating
 

trifero

macrumors 68030
May 21, 2009
2,728
2,575
**** - after upgrading to the newest betas unlocking Mac doesn’t work again ? C’mon Apple I’m not gonna change the password every single time - it’s so much frustrating
It’s a B-e-t-a. You can send a comment reporting the bug to Apple, but not complain. That’s what betas are for.
 
Last edited:

TeToslaw

macrumors regular
Jun 17, 2013
113
11
It’s a B-e-t-a. You can send a comment reporting the bug to Apple, but not complain. That’s what betas are for.
I agree with you of course, but you’re wrong this time. Just view previous posts. It wasn’t work on stable versions at all too. It’s something wrong with iCloud account and it has nothing to do with beta profiles
 
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Costino1

macrumors 6502a
Oct 1, 2012
767
696
Not working for me either....Apple Watch 5 and Big Sur (iMac 2019 and MBP 2019) No beta profiles.
 

cylack

macrumors 6502
Feb 21, 2006
289
263
Orlando, FL
Running Big Sur official release version and WatchOS 7.1. The solution presented in this thread did not work until I did the following.

1. Changed my iCloud password on my Mac, then forced logout out of iCloud on all devices (watch, iphone, and ipad)
2. Followed the steps outlined in this thread in Keychain Access deleting the autounlock, AutoUnlock, and pref files in shared folder.
3. Rebooted the Mac
4. Clicked the "use apple watch to unlock" in Mac System Preferences --> Security & Privacy
 

KennethS

macrumors 6502
Jan 4, 2011
341
449
UK
What worked for me was to unpair my watch from my phone and then re-pair it (I restored from the backup on the phone created during the unpair). It seems to be working fine now on both a 2020 MBA and 2018 Mac mini. It is also now working with 1Password.
 

icwhatudidthere

macrumors 6502
Nov 3, 2019
321
497
Ugh. This was working perfectly until I updated my new M1 Air to Big Sur 11.0.1. Tried some of these debugging steps and now it's broken everywhere.

On the Air, I can tick the "Use your Apple Watch..." checkbox but now no Apple Watches show up. Has anyone run into that?
 

sagarkhanapurkar

macrumors newbie
Aug 4, 2020
2
0
I've finally fixed it! I found a bunch of errors related to "AutoUnlock" in the Console that was hinting to me that there was some invalid state on my Mac with keys and plists not being reset properly. After clearing/resetting them, I can now successfully pair my watchOS 7 Series 3 to macOS 10.15.6.

Steps (follow at your own discretion)
  1. Open "Keychain Access"
  2. In "View", enable "Show Invisible Items"
    View attachment 954412
  3. Search for "Auto Unlock"
  4. You should see a whole bunch of application passwords for "Auto Unlock: XXXX's ..."
    View attachment 954403
  5. Select all records and delete (this will reset/disable auto unlock on other Macs if you use multiple Macs)
  6. Whilst still in "Keychain Access", search for "AutoUnlock" (no space)
  7. There should be 4 entries for "tlk" "tlk-nonsync" "classA" "classC"
    View attachment 954382
  8. Select 4 records and delete (don't worry if they re-appear, the system repairs this automatically)
  9. Open "Finder" and navigate to "~/Library/Sharing/AutoUnlock"
  10. There should be two files "ltk.plist" and "pairing-records.plist"
    View attachment 954386
  11. Delete both files
    (Some users have reported better success restarting macOS at this stage)
  12. Open "System Preferences" and try enabling auto unlock. You may need to enable it twice, the first attempt will fail.
This worked!! Thank you so much.
 

Weldor7

macrumors newbie
Nov 22, 2020
2
0
Thanks for doing all that leg work. But it didn't work for me. Running Big Sur on 2018 Mac Mini with series 3 watch on 7.1 and iphone 12 on ios 14.2.1. I also reset my AppleID password, as well as the watch passcode. I keep getting the error message that my computer can't communicate with my watch.
Screen Shot 2020-11-27 at 8.26.44 AM.png
 
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