Error! Launching the game failed! Failed to download file.

Hi! I can't get Minecraft to play. Every time it comes up with this message that says "Failed to download file". What's weird is it shows me a different file it couldn't load every time after I press play. I have tried to restart the launcher, I've reinstalled the launcher 3 times now and I've tried lots of other things to get it to work. It has nothing to do with my firewall or any mods, just the vanilla launcher. Doesn't matter what version of Minecraft I use either, it still doesn't work. Please help me find a fix! I've tried so many different things and it's driving me nuts!