iOS 16.2 Homekit problem - other users cannot access the home

This worked for me too - but only partially. My wife can access homekit devices in the house (but not remotely), and did not have Admin rights anymore. I raised a ticket with Apple Support - who were great. They recommended a Reset of Network settings on the iPhones affected. I did this and everything is now back to normal. Automations work again AND my wife has admin access correctly.

I had the same issue: once I rebooted all the hubs my wife's iPhone was finally able to access the HomeKit again.

As side problem, I cannot make any changes in my wife's user in the Home app, not on the Macs not on any other devices.

Took your advice and rebooted my AppleTV and HomePod. Then deleted the other user and added again. This resolved the problem.

Followed that same principle after removing my home and starting from scratch. Looks like all the bridges need to be manually turned off. Once turned off for a few minutes and turned back on, the home then appeared with those I shared it with and allowed them to see the accessories in the HomeKit app!!!

My wife had to set up a “My Home” on her phone, then the Home app asked her to update in the Home settings, hit continue…then she was able to switch back to our home. Works!

That worked, also in the situation here. After reboot of the hubs (HomePod and AppleTV) members could be added again.

One strange thing remaining: after they accepted the invitation, they disappear from the overview of people in Home Settings. If they look in the overview, they see only themselves and me.

Any idea how the overview of people granted access can be restored?

If you can see your home, but others can’t, try getting them to add a new fresh home to their device. From there, they need to try and update their home. Go through that process. Then, they should be able to toggle back to the proper home.

Yes, this. I just did this an hour ago and everything worked perfectly. Was able to remove the offending account, reinvite, and now the home app is operating as it was before the whole debacle.

I just had a similar issue, on my older / work phone I had to swipe-kill the Home app,

reload it, then I could see my regular Home; the App seemed to assume I was in another spot or new home...

I should have mentioned that by rebooting, I meant unplugging the devices rather than a software restart. Having read some of the other responses simply restarting them doesn't seem to be enough.

It took a moment for my hubs to all reconnect and come online. About 5 minutes or so. You can check the hubs and see if they are responding yet.

Understandably so...do yourself the favour and download the Controller app- it supports backups and after having to rebuild once, I never had to again.

I've got a similar issue, but not exactly the same.

I have a "house phone" that has a guest iCloud account that I keep around for an extra device to control the home.

On my main device, it shows this person as having accepted the invite normally but the home is nowhere to be seen and I can't remove them from my main device- I get the "Could not modify user's access" message and the spare device's home app is stuck in "Loading Accessories and Scenes". All other devices received their invitations quickly and worked flawlessly.

Tried wiping the device three times, force closing, etc.- even setting up a new iCloud address (which ended up with my being stuck in the "Loading Accessories..." screen again).

All devices updated to 16.2 and new architecture installed. Just the one phone won't get added to the home.

Yes exactly the same, my setup on my ID is absolutely fine, my partner on their ID is locked out and sees nothing. I still see them as a 'resident' on the Home app, but I cannot change their settings or remove their account. It's like their portion of the upgrade wasn't done properly. So annoying!!!