Solved Can't access Management Console using FQDN

[cdeacon]

v18U3 Build 461; Windows 10 NUC; onprem; firewall checker OK; local Polycom phones.

Since I installed 3CX with v16 at another site with a different public IP address, I have only been able to communicate with the management console at the current site using https://[3CX server public IP]:5001. Using the FQDN to achieve this does not work. I have tried changing to dynamic IP, using 8.8.8.8 and 8.8.4.4 DNS and resetting the 3CX server but there is no change once detected. The remote IOS apps work fine with the FQDN address. In all other respects, the PBX and its apps are working well. What am I doing wrong? Advice appreciated... (using 3CX FQDN)

 

[Alphabetic]

Have you used the same license key at 2 sites? This isnt allowed unless you're putting it in standby mode for failover. You should restart the system service so it will update the FQDN.

 

[NickD_3CX]

From the PC where you are having the problem accessing the Management Console from using https://[3CX FQDN]:5001, but the Public IP works, open a Command Line and run command ping <FQDN> (not nslookup, specifically 'ping').

What IP does it try to ping?

 

[cdeacon]

No the server was transferred from an old site to the new site. The same licence key is used, a new public IP address. I have tried restarting the system service many times but the FQDN still wont allow me access...

 

[Alphabetic]

No the server was transferred from an old site to the new site. The same licence key is used, a new public IP address. I have tried restarting the system service many times but the FQDN still wont allow me access...

You might have to wait for DNS to update. Is the FQDN pinging your old IP?

 

[cdeacon]

yes I get 127.0.0.1 when I ping the FQDN

 

[NickD_3CX]

yes I get 127.0.0.1 when I ping the FQDN

I thought this might be the case, at some point in the past you have installed 3CX with this exact FQDN on this PC, so there is a remaining entry in the 'hosts' file.

Go to c:\Windows\System32\drivers\etc\, edit "hosts" with notepad as "Administrator" and you should see an entry like this:


Remove this line, save the file, then try ping again.
If ping gives you the correct Public IP, then it should be fine.

 

[cdeacon]

Thanks Nick I'll give that a try...

 

[cdeacon]

Great! Problem solved! Thank you for your prompt responses.