Zimbra Upgrade to 8.8.15 issue with Chat

dbeato

If you upgrade to ZImbra 8.8.15 you might notice an issue as below and with the following prompt.

Unknown command sent to server: ZxChatReques

To fix this, run the following on the Zimbra Server Terminal as root and then as Zimbra user:
Move the old Zimbra Chat Java File

mv /opt/zimbra/lib/ext/openchat/zal.jar /tmp

Copy the Chat Java File

cp -rp /opt/zimbra/lib/ext/zimbradrive/zal.jar /opt/zimbra/lib/ext/openchat/zal.jar

Login as Zimbra User

su - zimbra

Restart the Mailbox Service

zmmailboxdctl restart

Then Chat works