smartthings invalid_request when authorizing integration

[BottlecapDave]

The problem

I'm trying to authorize smartthings with my home assistant instance, but when navigating back to nabucasa I'm getting "invalid_request". In the header it has the description "Unable+to+find+any+configurations+for+app"

What version of Home Assistant Core has the issue?

2025.3.1

What was the last working version of Home Assistant Core?

2025.2.0

What type of installation are you running?

Home Assistant OS

Integration causing the issue

smartthings

Link to integration documentation on our website

https://www.home-assistant.io/integrations/smartthings/

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

No response

[home-assistant]

Hey there @joostlek, mind taking a look at this issue as it has been labeled with an integration (smartthings) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of smartthings can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign smartthings Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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[joostlek]

I have no clue how this happens, this is the second report so far and a ton of people already migrated, so my advice for now is to just wait and try again later

[franillanes]

Same problem here!
I noticed that it's trying to use https://account-link.nabucasa.com/ to authorize it and I don't use Home Assistant Cloud.
I'm using a Cloudfare Tunnel instead, but for some reason it doesn't use it.

[brhahlen]

I have this same issue.
It redirects me to nabu-casa, which I don't use.

[joostlek]

You don't need to have Home Assistant Cloud, it uses account linking

[cedarearthy]

Same problem here, when I try to setup the integration it also gives me the same invalid_request error on nabu casa even though I don't have a subscription

[DriesSchulten]

Since the HA update I run into exactly the same issue; my HA is available over the internet over a custom domain. I've tried to authorize it through that domain; also tried with the only internal domain but exactly the same error appears.

[tobevers]

Having the same issue. I'm using Cloudflare, rather than Nabu Casa. I've attached the error message I'm seeing. I've removed the integration, rebooted, reinstalled it, then it works for a few days before stopping and giving me the same error message again.

[joostlek]

@tobevers Do you run multiple instances of Home Assistant?

[tobevers]

@tobevers Do you run multiple instances of Home Assistant?

Yes, 2 instances. I have one Home Assistant install at work and one at home. I've had to reinstall SmartThings on both in the past 2 weeks. The one at work is continuing to work. The one at home has stopped working again with the error message I screenshotted and shared.

[joostlek]

Are they connected to the same location? Or does every instance individually connect to their own location?

[tobevers]

Are they connected to the same location? Or does every instance individually connect to their own location?

The two instances of Home Assistant are completely separate. Concerning SmartThings, that's the only connection they have. I have a home door lock and my work door lock both in SmartThings using my work email address for SmartThings. I've signed into the SmartThings HA Integration in both HA instances using that email address. Does that answer your question?

[joostlek]

In SmartThings you can have multiple locations, so is each lock in its own location?

[tobevers]

In SmartThings you can have multiple locations, so is each lock in its own location?

No, both are listed in the same location, but different rooms.

[joostlek]

Check, thanks

[joostlek]

@BottlecapDave Do you maybe have your location id? That would help finding the issue

[BottlecapDave]

The location I'm trying to connect to is called "Home". I'm not sure where I can the location id from.

[joostlek]

https://my.smartthings.com/advanced/devices there's a page in the sidebar here for locations

[DriesSchulten]

I figured what was causing this and managed to fix it; I had to install the SmartThings app; go to settings; linked services; unlink Home Assistant. After that I just re-added the integration in HA and it went through the flow correctly resulting into a working integration again.

Based on the error in the URL it was SmartThings not finding the HA integration with the provided UUID. I don't use the Smartthings app (maybe originally once?) and reinstalled it to see if there was anything related to HA causing issues. I couldn't find / unlink this integration through https://my.smartthings.com; only in the app.

[joostlek]

That should not be needed though, that an unrelated app from before 2025.2

[franillanes]

I figured what was causing this and managed to fix it; I had to install the SmartThings app; go to settings; linked services; unlink Home Assistant. After that I just re-added the integration in HA and it went through the flow correctly resulting into a working integration again.

Based on the error in the URL it was SmartThings not finding the HA integration with the provided UUID. I don't use the Smartthings app (maybe originally once?) and reinstalled it to see if there was anything related to HA causing issues. I couldn't find / unlink this integration through https://my.smartthings.com; only in the app.

I just tried it and now it works for me too!!

[tobevers]

That should not be needed though, that an unrelated app from before 2025.2

It also doesn't work long-term. I've done that a number of times to get it working again, but it will stop again after a few days.

[joostlek]

@tobevers check #140312. that is your issue

[tobevers]

@tobevers check #140312. that is your issue

Ah, good to know. That explains why one keeps working and the other one keeps stopping. Thanks for the update. I'll move the other one to a new SmartThings account. Probably the way I should have set it up in the first place. Your work on this integration and your technical support are very much appreciated!

[joostlek]

You can use a separate location btw.

But it's something I'm looking to fix

[BottlecapDave]

I've just tried removing the old home assistant link in the Samsung app and Ive successfully added the integration so that must have been it.

[joostlek]

@BottlecapDave do you name still have the location id so we can find out what went wrong?

[BottlecapDave]

I stupidly wasnt thinking when I removed the original link, so I don't have the original location id. I can give you the new one that worked, but I don't think that's going to be much use to you.

[joostlek]

Oh you created a whole new location in SmartThings?

[BottlecapDave]

I didn't, I just followed the instructions around unlinking HA from the app and re-adding. The id of the location I had issues with is 0b41f997-15e6-499c-9d0a-e7e335753450

[joostlek]

Okay so I checked with the ST team and apparently it can happen that this happens and that removing the HomeAssistant entry in the SmartThings app can work. I can open a PR for the documentation when I have time (when anyone else feel like doing it, feel free to help out :) )