v20 update

  1. V20 Upgrade fails with "Invalid Backup File Invalid reply (LicenseEmail)"

    We have made several attempts to perform the V18 to V20 upgrade on an on-prem server at one of our supported schools but keep running into the same error condition when we get to the 'restore from backup' stage. We would appreciate it if you could take a look and help us figure out where it's...

  2. Change FQDN

    Hello. We have 3cx installed on a Windows 10 cloud server with our own FQDN, and I am attempting to update it to version 20. I want to update the FQDN to 3cx FQDN for the new update without altering the subscription key. Although it appears that they are modifiable in new installations, i was...
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