powerpoint 2016 says destination location no longer available when converting to MP4

[Laura_44]

After powerpoint processes the conversion error message "could not be uploaded because destination location is no longer available do want to save to another" but destination is still there as I saved it like it asked me to before the "create video" processed. Only a yes or no is available so I said yes and typed in the file name again then says an error occured with no other option. I've checked all the help within the program hopefully I can get some answer here I appreciate your help

 

[hang-the-9]

What happens if you try to save it in a different location?