Unable to access home assistant port 8123, connection refused

Installation Home Assistant OS
21

Hi, check https://green.home-assistant.io/ and notice the ‘Documentation’ & ‘FAQ’ at the top-right of your screen.

22

Hi, having the same problem " Unable to access home assistant port 8123, connection refused", Ping gives response to IP and homeassistant.local. It worked all fine for a long time, but now… Before having to re-install all…any tips here?

1 Like
23

HA observer…all seems fine:
Supervisor connected
Support Supported
Health Healthy

24

I also got this problem since a couple of days ago. Tried rebooting twice. Can also connect to the observer.

25

Did a Core rebuild in the CLI and now it works again. Phew.

1 Like
26

Core commands save the day. Thanks

27

Hi thank you, my HA did the same. Upon setup, I could reach HA through the http://homeassistant.local:8123 link,. This stopped working and now only accessible via the IP address. What could the reason be. Thank you

28

As said before, can you ping homeassistant.local?

29

Thank you! That fixed my system!

I was was away on a trip my HA instance (runing 2026.3.4 on a pi3) stopped working. Remotely connected to a computer on my home network, I could ping the system, but I got no response on :8123.

When I got home, I hooked up a monitor and keyboard and rebooted it. Surprisingly, it booked up to the HA CLI.

I ran core start and got an error complaining it couldn’t find /mnt/data/supervisor/cid_files/homeassistant.cid. So I ran core rebuild and that succeeded, after which I was able to start HA. And all is working again.

But why did the file disappear on an idle HA instance?