Uninstall Office for Mac 2011. Note: You must be signed in as administrator to do these steps, and you probably already are, if you're using your own Mac. If you're at a Mac that's part of a network at work, you might have to ask someone in your IT organization for help with signing in as administrator. Remove the Microsoft Office 2011 folder. Microsoft has been readying its latest update to Office for Mac, and recently released its first preview. We decided to give it a whirl and wanted uninstall Office 2011 to avoid any conflicts. Much to our surprise, uninstalling Office 2011 for Mac is a terribly complicated affair.
Technically, you don't need to remove an older version of Office on Macs. The new version won't overwrite any old files or anything. The applications use their own com files and whatnot, so they don't even share folders. The only thing they'll share is the application location, if you put it in the default location for applications when installed.