I have Zimbra Desktop 1.0 installed. Can I upgrade to Zimbra Desktop 2.0?
Zimbra Desktop 2.0 can be installed on a computer running 1.0 as if it’s a different application. It will leave your 1.0 software and data intact. However it is strongly recommended that you completely quit 1.0 before running 2.0, as running two applications in parallel will adversely affect performance.