Upgrading to V18 from V16 question

[droehrigibml]

So we upgraded to V16 back in January. I know V16 is EOL in Nov 2022. But does that mean the server/system will stop working? Does the 3CX system have to be updated currently. We are moving from OnPrem to another system in March 2023. We had difficulties with getting upgraded to V16 (the system got corrupted). So if it is not absolutely necessary to update I would like to know the outcome.

Thanks for you help!
Donna

 

[AndreasC_3CX]

The servers for v16 are shut down, so currently, your system should not be able to communicate with our activation servers. Should anything happen to your system, you would not be able to activate version 16 again and would need to re-install with version 18 and restore a current backup.
This also causes a secondary effect of your 3CX FQDN being automatically released. If your system cannot reach our activation servers within 60 days (currently), the system appears offline and causes the FQDN to be released.

Please also keep in mind that version 18 is more secure than version 16 and it is also supported.
Here is the guide for upgrading to version 18 https://www.3cx.com/docs/upgrading-pbx/