This morning: Unable to connect to Home Assistant

Configuration
1

Hello,
After months of good working this morning I get this message when trying to connect to web interface: “Unable to connect to Home Assistant RETRY” . I can connect to ssh and logs are: INFO and WARNING not related with this failure.
HA is the last 0.105.5, and I am using orangepi+2E with Docker, what to do ?
Thanks

2

if the logs don’t show any errors and you are able to connect through SSH, depending on how you connect to your frontend, it might either be a certificate issue if you connect https or a frontend issue. Did you try to restart home assistant (if you have SSH access, you could try through CLI)?

3

Yes I restarted HA and also updated to 0.106. Strangely it happened after the update of Firefox.
Yes probably a certificate issue, when I try connecting with internal IP I get ‘Unable to connect to Home Assistant RETRY’ and when connecting externally with domain name I get Firefox message ‘SEC_ERROR_EXPIRED_CERTIFICATE’.
I am trying renew certicate with certbot but I am stuck with error : ’ Invalid response from domain etc’.
and unfortunately I cant access let’sencrypt plugin.

4

I progress ! HA is accessible with another browser that I had left out, Vivaldi…Starting running let’sencrypt plugin let me with same error than CLI certbot.

""All renewal attempts failed. The following certs could not be renewed:
/data/letsencrypt/live/xxxxxxxxxxxxxx/fullchain.pem (failure)

1 renew failure(s), 0 parse failure(s)
IMPORTANT NOTES:

  • The following errors were reported by the server:
    Domain: xxxxxxxxxxxxxxxxxxxxxx.org
    Type: unauthorized
    Detail: Invalid response from
    https://xxxxxxxxxxxxxxxxxxx/index.php/login [nn.nnn.nnn.nnn]:
    "\n<html class="ng-csp"
    data-placeholder-focus="false" lang="en" data-locale="en"

    \n\t<head\n data-requesttoken="ArAG"

    To fix these errors, please make sure that your domain name was
    entered correctly and the DNS A/AAAA record(s) for that domain
    contain(s) the right IP address.“”

5

OK I found the problem, port 80 wich is used by let’sencrypt where used by an other server in my lan.
I can connect to HA Lovelace from domain name, the certs renewed but still stuck when using IP address firefox says “Corrupted content” “protocol violation”.

Thanks Piggyback

6

After deleting Firefox cache its OK !!!