Upgraded to V20 - now can't access 3cx

[Krammer]

When we upgraded to V20 we encountered an issue where we can't access 3cx console through a browser.

" cant establish HTTPS connection "


I don't know enough it to setup the special firewall / router settings for v20 and am trying to reinstall V18 and restore a backup.
The 4 user free edition is fine for us, ( don't need 10 users.

When I try to restore my backup , it stops and gives a message " no licenses available.


we have been using 3cx for years and always just clicked " yes " when upgrading.
This upgrade created an it issue that I'm finding difficult to resolve.

Thanks
Richard

 

[bitn2]

You cant go back to v18. Anyway the free selfhosted licence ends at 31.12.24. To resolve your actual problem: where is your pbx installed and how? What is your firewall and dns server? Did you follow the instruction before the upgrade?https://www.3cx.com/docs/upgrading-pbx/