I’ve made an attempt to setup the Home Connect integration. For various reasons this did not work and I decided to delete the Application in Home Connect developer site. I then attempted to add the integration again but it then immediately wants to continue with the previous attempt and opens the url with the wrong user, keys, etc.
How do I stop the setup of the home connect integration so I can start all over?
Having same issue, I suspect the integration partial config flow is stored somewhere but I haven’t figured out yet if it’s in the ‘.storage’ folder or in the database.
I’ve narrowed it down to .storage/application_credentials file which contains the HomeConnect client id an secret.
This worked for me: renamed that file, then restarted Home Assistant and re-added the integration. It started the HomeConnect setup from the beginning.
Hope this helps!
Ah, thanks. I will try and report back later.
update: renamed, restarted and it’s now possible to add the integration again, thanks!
I am surprised that this issue still hasn’t been solved. I click on integration, I authorize the app, I click on link account and then I get a window saying ERROR and that’s it.
Trying to change any configuration is not possible. Took a while to find this thread and when I delete the application_credentials files, it loads the external website. The file gets never created again. This integration is very buggy and non-functional at this stage.
Yeah I kinda gave up on this integration. Never got it working.
Just made the same mistake today … deleting the content of Homeconnect out of /config/.storage/application_credentials (via terminal) and rebooting the server may lead to an error which is being fixed by HA automatically, but integration can be started from 0 after doing that. If u create the account correctly in HomeConnect it runs fine after granting access.
The actual place to delete this setting is
Settings > Devices & Service > three dotted menu > Application credentials
You’re welcome 
thanks ! it work
This should be the top-ranked answer! Thank you!
Thank you! That’s the solution!
Best answer
I was unfortunately not able to find the file in the application credentials. I was able to install and configure the Samba Share add-on and used that tool to navigate to the application credentials file. It was a big rabbit hole but we got it done.