thank you a lot! I have this "unlock" button for ppt but not for pps.. which is actually what I need
the other option may be valid forever, but it's a bit hard to ask the client to disable his protections.. not very professional.

It's really a stupid thing from Microsoft to disallow seeing a simple mp4 file from internet which can't be dangerous at all. We live in 2015 and the world need the chance to include online videos into presentations..

Looking for more options if there are,
how to "unlock" a pps? thank you!