Bnet launcher is fixed - you can download the installer from the official website.
Tested on freshly installed - clean Windows 7 and everything works 
@Mods @Blizzard - you shouldn’t allow blizzard download instructions from any non-official source to be posted on the forum, and also that someone would persuade others to do so.
Download blizzard app from some shady, dumped websites, is the fastest way to lose your account.