Troubleshooting steps to resolve this error
Use the steps below to troubleshoot installation issues for Blizzard games.
Information on error BLZBNTBNA00000066
Information on error BLZBNTBNA00000067
Information on error BLZBNTBNA00000065
Cannot install or patch Call of Duty: Modern Warfare
Cannot install or patch Call of Duty: Modern Warfare II
This error occurs when you have connected to our patch server but you cannot download patch information.
This error means Battle.net Agent (the process that installs and patches our games) couldn't stream necessary files.
Cannot install or Patch Call of Duty: Black Ops 4