Well, there are a lot of them sprinkled throughout. But the main ones are in:
HKEY_CURRENT_USER\Software\ZIMBRA and
HKEY_LOCAL_MACHINE\SOFTWARE\Zimbra
If you have a 64 bit machine, then HKEY_LOCAL_MACHINE\SOFTWARE would have the Wow6432Node below it.
There are also many GUIDs and data with the value ZCS Connector for Outlook. You may or may not need to worry about those. If those get left around, earlier versions may not uninstall/upgrade correctly.
But at first, I would just try the 2 main ones I listed at the top. |