If you upgrade the server to 4.5.5 you will still be able to run the outlook connector 4.5.4 until you upgrade it to 4.5.5 but I would definitely try to upgrade the connector to the latest version. To get the 4.5.5 outlook connector you just need to logon to the admin gui and download it from the download section after you have upgraded the server to 4.5.5
It should let you just do a upgrade, sometimes it is required to uninstall and reinstall but only if something goes wrong. It should not delete the profile. If you are not using the default profile name "Zimbra" it might make a new profile called "Zimbra" but you should be able to just revert back to the other profile you were using.
Hope that makes sense
Paul |