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, thank you for reaching out to Microsoft Q&A.
- Does the error occur when opening all your saved PowerPoint presentations, or only with a particular file?
- Are the files saved locally on your computer, or are they stored in OneDrive?
- Could you share a screenshot of the error message here for reference?
Meanwhile, could you please check if you can open the PPT files normally in safe mode?
Click Windows + R, type
powerpnt /safe
Click Ok.
Open the saved files and see if you are getting the same error.