Updates for your Office suite should be downloaded and installed from the Office for Mac built-in update tool (AutoUpdate) or directly from the source (Microsoft’s official website). It is imperative to have your Office suite as up to date as possible to make sure any known exploits and vulnerabilities are patched. Office for Mac 20 are the ones I see out there most frequently. Office for Mac is a software suite that is frequently updated to introduce new features, improve stability, performance, compatibility and security. One of the most commonly found 3rd party applications on a Mac is Microsoft Office. How To + Software & Apps How to tell if an Office for Mac update is valid