Troubleshooting Missing Thumbnails in Microsoft PowerPoint

The video tutorial addresses an issue where Microsoft PowerPoint presentations are not generating thumbnails upon saving. The instructor shares a personal experience with this problem and provides a simple solution: enabling the 'Save preview picture' option in the Advanced properties menu. The tutorial concludes by verifying that this solution successfully generates thumbnails, offering a straightforward fix for users facing similar issues.

What steps did the teacher take to resolve the thumbnail issue?

How did the teacher feel about the sudden change in thumbnail generation?