This article will explain how to check which version of Microsoft Office you have installed on Windows:1. Open any Microsoft Office program that you have on your system. Word, Excel, and PowerPoint are the most commonly installed Office software. 2. On the top left corner of the Office program, click on File. 3. Within the File menu options, click on Account on the bottom left corner of the Office program. 4. You will now see the type of Office installed along with the version number in the "About" section.