How to Open a PPT File Without Powerpoint. Microsoft PowerPoint is on over a billion computers worldwide, according to Robert Gaskins, one of the program's developers.

Wondering how to open a PPTX file in Windows 11? To do this, you need to use PowerPoint, but you can also use the online version of Office.

Designed for use with Office 2000, XP, and 2003, the downloadable add-on allows you to open, edit, and save the newer file formats, seamlessly converting the files on the fly and in the background.