Unable to connect with 3CX License server. Check your network and try again.

[ethamitc]

Server OS: Debian 9 (3CX ISO)
Running on: Proxmox 6.2

This is the third day I'm trying to get 3CX working, and yet again I am running into the issue of the machine being unable to connect with the license server. This is a fresh installation with a standard key. Can't even do the basic setup as I'm stuck on the initial activation. I highly doubt this is a firewall issue as the VM has been put in the De-militarized zone (DMZ) on my router.

 

[Evolute IT]

Is the time on your VM in sync?

 

[ethamitc]

Is the time on your VM in sync?

How would I check that on the custom Debian image?

 

[ethamitc]

How would I check that on the custom Debian image?

Nevermind, i ran the date command and it returned the proper date & time.

 

[Evolute IT]

Can you ping activation.3cx.com(or .net, not sure) from the Debian machine?

 

[ethamitc]

Can you ping activation.3cx.com(or .net, not sure) from the Debian machine?

I was told that activation doesn't accept ICMP ping's.

 

[StefanW]

Proxmox is an untested HyperVisor which to my knowledge does virtual network adapters which will not work with 3CX.