PowerPoint presentation can't be read?

This presentation took 8 hours of work, but now the presentation will no longer open for some reason. Could it be because I used too many GIFs and animations in the presentation?

Does anyone know how I can solve the problem?!

I click on repair "

I click show help "

There's no antivirus program on my laptop. I checked several times.

Maybe WebM Media Foundation Components and Xiph.Org Open Codecs are anti-virus programs?

Do you have windows 10? The antivirus software is already integrated in the system there (Windows Defender).

I turned off real-time protection and it still doesn't work.

: '

I would also have been surprised if it was the virus scanner. I would say the file may be damaged?