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Version Mismatch

Discussion in '3CX Phone System - General' started by Eagle2469, Jan 11, 2019.

  1. Eagle2469

    Aug 6, 2018
    Likes Received:
    I installed version 16 to try it out. But, since ring queues is missing, I decided to go back to version 15.5. However, when I try to restore my backup I get the following error.

    "Product cannot be activated because license key is for a previous version. Upgrade license key or purchase maintenance from https://customer.3cx.com/orderform/default.aspx"

    It looks like the upgrade changed the license to version 16.0.0 and won't let me use it for 15.5. This is using the free standard license. How can I fix this?
  2. cobaltit

    cobaltit Well-Known Member

    Mar 22, 2012
    Likes Received:
    I don't think you can without involving 3CX Support which will have it's own challenges. Hopefully you took a backup without the license key and FQDN. If so you can just release the FQDN for your current key, get a new free key and restore v15.5 .
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  3. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

    May 10, 2016
    Likes Received:
    Hello @Eagle2469

    Please send me a p.m with your licence key information so we can look into the issue.