Current issues in ZCS 8.6
Current (Known) Issues in ZCS 8.6 Build 1153
Upgrading from 8.5.1 to 8.6 doesn't check the local proxy variables and it fails the upgrade. When upgrading, the Script validates the license against https://license.zimbra.com. If your Server is behind a proxy the upgrade script (and also the license activation itself) ignores the Proxy System Variable.
Mac Outlook 2011 requires 3DES or RC4 ciphers Outlook 2011 is unable to negotiate SSL/TLS, probably from disabling RC4 and/or other insecure ciphers With a workaround in the same Bug.
License is expired or cannot be upgraded
When Upgrading from 8.5.1 or 8.5, or from 8.0.x users can see the next message:
Validating existing license is not expired and qualifies for upgrade Error: License is expired or cannot be upgraded. Aborting upgrade
This error can be for the next reasons: a) Check if you haven't exhausted the number of activation for the license.
b) Check if your support subscription is still valid. Send a email to email@example.com with Questions about Licensing.