Manually uninstall TechTool Pro step by step: Most applications in Mac OS X are bundles that contain all, or at least most, of the files needed to run the application, that is to say, they are self-contained. Continue reading this article to learn about the proper methods for uninstalling TechTool Pro. Find more such tutorials on - in this video I am going to show you how to delete applications off their computer or Permanently Delet. Leave Office applications closed while you go through this process. Before you remove Office for Mac 2011, quit all Office applications and make sure there's nothing in Trash that you want to keep. To uninstall Office for Mac 2011 move the applications to the Trash.Once you've removed everything, empty the Trash and restart your Mac to complete the process. This works on apps installed through the Mac App Store, but not for apps installed manually through third party developers. Despite the already incredibly simple app uninstall process on a Mac, Lion and Mountain Lion onward makes it even easier by taking the iOS method. Uninstalling Apps from the Mac App Store through Launchpad. Uninstall App On Macbook Pro High Sierra.