I’m running home assistant via HA OS on a Raspberry Pi, all software is on the latest, stable version. When trying to install the Matter Add-on, the installation starts but then just hangs with the endlessly rotating circle and the message, that the Add-on installation is finalized - which never happens.
I did a restart and all but the result is always the same. As this does not seem to be a common issue, can you please advise what to do/check? Thanks
Reboot the Pi (and not just restart HA)
Check the logs, especially the Supervisor logs.
one of the first things I tried…
What I found in the logs:
2024-05-18 20:21:37.740 INFO (MainThread) [homeassistant.components.matter] Matter Server add-on is not installed. Installing add-on
2024-05-18 20:21:37.750 ERROR (MainThread) [homeassistant.components.matter] Matter Server add-on is not available anymore
It skips the download and jums right to install where it remains endlessly with the error message above. Is there a way to trigger a new download, clear the download cache or something like that?
ok… I just realized that the Matter integration only runs on 64 bit versions - so I’ll migrate and then it should work…
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Yeah currently the Matter Server add-on is only build for x86-64 and aarch64. The error is somewhat confusing, as the add-on is not no longer available “anymore”, but just not available on that platform 
FWIW, I’ve adjusted the error: Adjust add-on installation error message by agners · Pull Request #118309 · home-assistant/core · GitHub
Also, we plan to improve the integration config flow a bit so a user will get a warning while setting up the Matter integration.
I’m seeing that same message, but definitely on 64-bit, aarch64: “Matter Server add-on is not available anymore”.
Any ideas?
EDIT: Upgrading HA core to 2024.6.3 fixed it!
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