Please help i cant install battlenet because of this. i tried start as admin, tried vpn, tried dns. Help!
Had the same problem. If u have a friend who plays cod or anything from blizzard just tell him to give you the files from %programdata% (battlenet and blizzard entertainment). Also tell him to give u the folder with battlenet and battlenet launcher. It worked for me I dunno if im gonna be able to turn on game or not. We will see. At least it updates now.
Yep. Worked perfectly! 
Hello!
For anyone else with these issues -
First step:
Second step:
If issues persists please see:
We also advise making sure that your windows install drive has at least 10GB of free space, and that you do not install games on an external hard drive.