HSTS Error on Failover

[markbrown]

Hi

I have an active/passive pair of servers and had an issue when we lost the active server.
The server completed the failover fine, trunks came up and IP phones reconnected.
However as the IP address changed we were getting HSTS errors and the web browsers would refuse to connect to the server.
Has anyone come across this before?

Mark

 

[Evolute IT]

Custom FQDN or 3CX one?

 

[markbrown]

Sorry I missed your reply, it's a 3cx one.

 

[VasilisV_3CX]

Hi @markbrown,

A HSTS issue usually occurs when trying to connect over a broken HTTPS connection (mis-match hostname, expired certificate, etc).

With your server in passive mode, you should still be able to access the management console by navigating to the IP. If you log in to management console and check the certificate can you check if the certificate is valid?