A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hello everyone! I think I found a solution to this problem.
I have this issue every time I download a powerpoint from my chemistry teacher's page. What I did was save the powerpoint as a "Powerpoint Picture Presentation" and I renamed it. Once you click save, a few seconds later, a little box should pop up saying that a copy of your presentation has been saved in wherever you saved it. If you do all your editing on the copy powerpoint, you should no longer have this problem. The only downside to this is that anything you wrote (using ink tools) outside of the actual powerpoint slide will be lost; however, everything written in each slide will be saved in that copy of the original powerpoint.
P.S: Sorry, I don't know if everyone can do this, but hope it helps!
olados