This error occurs when you have connected to our patch server but you cannot download patch information.
Troubleshooting steps to resolve this error
Use the steps below to troubleshoot installation issues for Blizzard games.
Troubleshooting step for connection-related problems on Windows.
Information on error BLZBNTAGT0000083F
Information on error BLZBNTBNA00000065
Many common hard drive or OS problems on a Mac can be resolved by repairing your disk permissions.
How to run a pathping on Windows and Mac.
A guide on running a traceroute on Windows and Mac.
This error means the Blizzard Agent (the process that installs and patches our games) couldn't stream necessary files.