I'm trying to install the game, I already downloaded it months ago. When I open the installer a small window appears saying ''Updating setup files...'' and the progress bar is about 33% done, However, it's stuck there and nothing else happens.
I tried disabling Kaspersky and launching the setup as admin, nothing works.
Alright I got it working by using legitpwnage's files.
Download this : http://www.gamefront.com/files/21699449/D3+-+Battle.net+Files.zip
And replace your Battle.net folder (in appdata) by this one, then open the setup.
It works 100%. :)
Have fun, See you in game tonight.