PPT? Powerpoint? Well, if I was uploading Powerpoint to my adobe cloud, it probaly hang as well!?!
I tried downloading a PDF from the Acrobat Web, no issues at all. PC user?
Percentage symbols (%20) after each word? It's actually URL encoding for spaces, and browsers often convert them when displaying or saving filenames. Solution? Don't have spaced in the file names. Instead either have dashes, hyphens, underscores or no spaces at all.