After a post office is updated to version 6.5, users can run the GroupWise 6.5 client on a Windows 98 or Windows NT/2000/XP workstation. If necessary, they can also continue to run their older GroupWise client for Windows, but they will not have GroupWise 6.5 functionality.
IMPORTANT: Users who need to proxy users on a post office should not update to the GroupWise 6.5 client until the proxy users' post office has been updated to version 6.5. If they do update to the GroupWise 6.5 client, they cannot access the proxy users' mailboxes.
For a list of new features in the GroupWise 6.5 client, see What's New in GroupWise 6.5.