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Homekit: Accessory Already Added Issue?

During the installation process of my new Yale Assure Lock SL Wi-Fi and Bluetooth lock I added the August module to my Home app and realized I did it in the wrong order per the installation manual, so I removed it. I'm not unable to add the August module back to home Home app as I keep getting the "Accessory Already Added. To add this accessory to your home, you'll need to reset it first." After two and half weeks trying to debug the situation with August support (uninstalling the lock from the door several time, resetting the lock to factory default setting via the Yale Access app and the hard reset button in the lock. Removing all existing accessories from Home app and completely deleting my home the that I had setup in the Home app several time. Disabling iCloud sync on all devices) with no avail. I'm now turning to the Apple community for assistance. The last point I'll add is the Yale Access app has a add lock to Homekit Setup and during that setup process I get stuck on the following screen "We were unable to find your device. Please make sure the device is nearby and powered on". I'm able to open and close the lock via bluetooth, Wi-Fi, and over the Internet without any issue through the Yale Access app. Any help will be greatly appreciated.


Posted on Nov 14, 2020 12:37 PM

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Posted on Nov 26, 2020 3:01 PM

The exact same thing is happening to me.


I added the lock to the Home app first which worked like a charm and I could lock and unlock it fine. I then set up the lock in the August App and got it working there, but then I checked the lock in the Home App and it showed an error that said something about not being able to communicate with the device. No problem, I thought, I'll just remove the accessory and add it back again...


I removed the lock accessory and there were no accessories listed anymore in my Home app (this was the only one I'd added) - but when I tried to add it back I got "Accessory Already Added. To add this accessory to your home, you'll need to reset it first."


  • I tried creating a new Home in the home app and deleting the original home.
  • I tried factory resetting the Yale Assure Lock via the August App and redoing everything
  • I tried deleting the Home App from my iPhone and re-installing it
  • I tried rebooting my phone
  • I rebooted the Yale lock countless times
  • I tried turning off access from the Yale and August apps to the Home data in my phone security settings
  • I tried manually adding the accessory by typing in the code but got something about not being able to communicate with the device. I was standing next to it - and the August app was able to lock and unlock it using bluetooth just fine.


Why does the Home App say that the accessory has already been added when there are no accessories listed at all in the Home App? The Home App on my apple watch and on my MacBook Pro also show no accessories. How can I get this working again?

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Homekit: Accessory Already Added Issue?

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