Sharing HomeKit problem - Apple ID is not registered with iCloud problem

Well the good news is I have mine working again as well… The bad news is you still cannot invite from the Home app inside of iOS.

If you have a third-party apps such as the Phillips hue app, Elgato eve, etc.… You can invite someone from there and the invitation will go through.

This was not working prior to the update but I can confirm that it does work post update.

Install Eve from Elgato. That app does not need to have any of its devices in order to invite. And it’s actually really good to use if you want to do some advanced features with scheduling and scenes.

Although the EVE app does work for invites, none of your Guests will be able to see the HUBS and have no remote access to any devices, they have to be on WIFI and get annoying message on HOME stating Hubs offline

Not true... of you’ve updated your devices to 11.2.1 and your Apple TV’s it does work. Wife and friend both accepted invites after updates (via Eve app as I still had the invite error via Home app). Both are able to edit and access same as before the issues.

You must not have updated everything or have another issue. Many have reported success with this method. Either Phillips Hue or Eve app

This is an exaggeration honestly... you can invite anyone with a valid Apple ID, even strangers, yes... this bug has obviously affected some subset of users but there is a workaround today... with further fixes coming.

Well that's interesting. Looks like the invite problem might not be fixed then. I don't think it should matter if your remote when you invite somebody. I am still trying to get the family devices upgraded but it sounds like I am wasting my time.

I had to follow the instructions above and do the invites from within the Philips Hue app. Additional information for those it may help - I was unable to add others, even after having them log out and into iCloud. I had to use the Philips Hue app.

Thank you for the great help provided in this thread!

So got all my devices updated but it didn't help still couldn't invite wife or son. What I did is had the wife invite me to a her blank home. Accepted the invite and then removed myself and had her remove me. Then I could invite her to my home that has all the devices. Wohoo finally fixed I thought but still couldn't invite the son. Had him do the same then I could invite him. Now we are one happy family again. Thanks apple for causing some much frustration and a considerable waste of time.

I have the same - I have 3 Elgato EVE devices and Phillips HUE. In my Homekit I use all these devices. If I invite other people in Phillips Hue, the whole homekit is shared including Elgato Eve. So the Phillips Hue App can do something Apple Homekit can't (?)

I was having trouble but it then worked after I turned off iCloud Drive and Home on my iPhone before restarting annd then turning them back on again. Of course the time it took to do that may have also allowed something server side to update. It might be worth a shot!

I managed to get it to work however it required a complete wipe of my current homekit setup on both my primary and secondary devices.

It was the only way I could get it to work.

11.2.1 fox didn’t work for me.

I was also having this problem and updated to 11.2.1 in the hope that it would fix it, but it didn't. I found an old solution (about a year old) which did work - remove all the guests from your House and then re-invite them and the error goes away.

Okay so I’ve got mine working like this....

I had the smart devices and Home App setup in my account- and I could not invite my girlfriend.

So on my girlfriends account and Home App I invited myself to a “fake” home, and accepted.

Then from my Real home, on my account- I invited my girlfriend and it all worked 😬😬😬

Hope that helps and makes sense?