How to Make a Microsoft PowerPoint Presentation Read-only Jan 17, 2021, 10:24 am EDT | 1 min read If you want to discourage others from making edits to your Microsoft PowerPoint presentation or let them know the file you sent is the final version, you can do so by making it read-only. Here’s how it’s done. Note: While making your PowerPoint presentation read-only is a good deterrent from having others edit your content, it’s easy to unlock a read-only presentation. It’s by no means un-editable. Open the presentation that you want to make read-only, then click the “File” tab. Next, in the left-hand pane, select “Info.”