The new version of Office by contrast is clean and much more Office-looking. Yes, it gets the job done but the interface is a mess and downright ugly. It’s just never felt like a real OS X application, or even a decent version of Office. It’s no great mystery why we’d want to uninstall Office 2011. The new version of Microsoft Outlook will import your email from the old version, but it can only do so if you’ve left the old version installed. Leave the old version installed and install the new one. Update: There’s no need to uninstall an old version of Office for Mac before installing a new one. Much to our surprise, uninstalling Office 2011 for Mac is a terribly complicated affair. We decided to give it a whirl and wanted uninstall Office 2011 to avoid any conflicts. Microsoft has been readying its latest update to Office for Mac, and recently released its first preview.