Home app showing "Loading Accessories and Scenes" in perpetuity.

This helped me, in this particular order:

1) turn off Keychain

2) turn off the toggle of HomeKit in iCloud

3) turn on Keychain

4) open HomeKit app and press the button inside the app to enable ICloud.

hopefully it helps.

I had the same issue. Supposedly it was fixed in the latest IOS update. After the update I had to open the homekit app and let it sit there for about 45 minutes. On one phone I let it sit there and on another I let homekit run in the background. After about 45 minutes the one just sitting there finally gave me the option of resetting homekit, and then it started working. The one with homekit running in the background never gave me the option; so on that phone I closed all apps, opened homekit, just let it sit there, and then after about 45 minutes it gave me the option of resetting it. So just a game in patience.

A simple steps can sort out this issue.

# Go to settings

# Tap on your name (Where you can find Apple ID, iCloud etc.)

#Again Tap on iCloud

# Scroll down and Tap on "Key Chain" option

# On - iCloud Key Chain.

That's it

I solved this issue for me by doing something I did not see listed anywhere. I also tried all of the above steps in op.

I reset and deleted all settings from my iPhone. Then when prompted I set up my phone as a new Phone, not a restore from iCloud. Then I logged into a fresh iCloud account and my home worked again. Lastly I logged back into my actual iCloud and pulled in all of my data to my “new phone”. Still works. Just had to download apps and set up Apple Pay and all of that business again.

This was truly one of the most frustrating problems I’ve ever had with apple software. Hope this helps y’all.

I got to tier 2 support and they were able to fix this issue for me. You could very well have a different problem, but for me, the Home app database was corrupted on my device. The solution was to clear the home app data which requires access to the settings screen of the Home app, which I obviously couldn't get to. Here's what I had to do. On a separate device I signed into iiCloud and started up the Home app, thankfully, it launched correctly here (maybe the corrupted data hadn't synced all the way or something). From the Home app's home screen (the one with the red leaves) I accessed the settings via the arrow on the top left corner; this opens up the settings, at the bottom i tapped a button that said "Remove Home". This is the new way of clearing your home app data (on iOS 9 I believe there was a way to do this for home kit in the system settings). Now that the database was cleared I waited a few mins to allow the change to propagate and sync to iCloud. NOW, on the borked device, disabled and reenabled HomeKit from the iCloud settings in the setting app (Settings->your_name->iCloud->Home); this should manually trigger a resync of your now cleared home app data and viola, you should be able to launch the app.

Thanks for this great workaround. My wife had this issue since her last iPhone and even when she upgraded to X and iOS 11 the problem persisted. We tried various things to remedy it without much success. Even went to Genius Bar where they told us that the phone will need to be setup as new phone and although photos etc could be recovered but all apps and iMessages will be lost which was not ideal.

I came across this just an hour ago and already the HomeKit is up and running. Thanks once again.

Did you ever get a resolution on this? I've been having he same issue the past week or so. Unfortunately I usually go into panic mode (instead of trying things one by one) so I'm not exactly sure what fixed the problem.

First, my setup. I have 6 active devices on iCloud: My iPhone 6, my old iPhone 4S, an ATV3, an ATV4, an iPad pro, and an old (30-pin connector) iPad. Only the ATV4 is configured as a home hub.

The first time I had the issue, I got this screen on my iPhone and iPad Pro. I signed in and out on my phone, didn't work. Then in and out on my phone AND the iPad Pro. Didn't work. Then phone/iPad/ATV4. Still didn't work. Then phone/iPad/ATV4/ATV3 (even though it wasn't a home hub). I think this is the point where it started working again.

Second time, I got the message on my iPhone only. I didn't dare open the home app on another device lest it cause more issues. Signed in and out on my iPhone. Didn't work. Signed out on the ATV4 and left it out. In and out on my phone again. Didn't work. Signed out on the ATV3, then in and out on my phone. Started working! Signed back in on the ATV4 and after a few minutes it was back up as the Home hub.

So the last action I took in both cases was signing out of iCloud on my ATV3. ATV3 technically isn't even supposed to support Homekit, though I've seen screenshots of it being used as a Home hub, and I myself have seen the Home app list the ATV3 as an "offline" home hub (though it didn't show that way the last time I had it signed in). Could it be that somehow, this device that isn't supposed to be part of Homekit but seems to somehow get interconnected with it corrupting the config and causing the Home app not to work? Or is it just that the repeated logging in and out eventually works, and it has nothing to do with which devices are logged in? I have no idea. All I know is that this is incredible frustrating and someone I hope we find an actual root cause and solution soon.

For now, I'll stay signed out on the ATV3 (I'm mostly using it to stream music to my Playbar anyway) and see if I encounter the issue again. If I do, I'll come back and update these comments. Going to post this around a bit as I've seen quite a few threads on this and no real solutions...

I just had the same problem and did a chat with Apple Support. We were trying a few things at the same time but I think what fixed it is updating and/or restarting Apple TV. The Home App seemed to load up right when the Apple TV booted back up after completing an update. Apple TV is an integral part of many HomeKit setups, but we often forget about that because it all happens in the background.

I just chatted with a senior advisor and she was saying they have no access to resetting things on their end. That everything is done on the device itself. Is this accurate? I find hard to believe that Apple wouldn’t have control over Apple IDs.

I still don’t have a solution for this and it’s been more than 1 year.

Can you tell me what steps did your tier 2 have you do?

Thank you.

I've contacted Apple for this. You can reset your corrupted HomeKit data by waiting for 30 minutes on the "loading accessories and scenes" screen. A message in red text will appear below to reconfigure your settings.

Other solutions: Create another Apple ID or logout in iCloud.

All this did was break may already working device. Do this with caution.

I'm not sure if you actually contacted Apple or not. I've called them on various occasions, and they just reply back with "We send information to engineers" or some excuse like that. I know it is basically an empty promise. Incredibly frustrating and I have a variety of HomeKit devices that I cannot use with Siri. I think that the only way to fix this is to transition to another Apple ID. If you ended up finding a solution please post it or link me to it, I've been trying to find a solution for over a year.