Failed to Download Files from Battle.net

Keywords: BLZBNTAGT000008A4, BLZBNTAGT000008A3
Failed to download files from Battle.net.
Error Codes: BLZBNTAGT000008A3, BLZBNTAGT000008A4

Battle.net is unable to download a file required for installation or patching.

Windows

  1. Close Battle.net and wait for Agent.exe to disappear from Task Manager before relaunching Battle.net. If the issue persists, restart your computer and try again.
  2. If you're using wireless internet, try switching to an optimized wired connection.
  3. Damaged or missing data files may prevent files from downloading. Scan and Repair game files.
  4. Security software may interfere with the Battle.net Update Agent and prevent it from running properly. Disable or temporarily uninstall any security programs.
  5. Programs running in the background can conflict with the Update Agent. Try closing background applications.
  6. Certain malicious software can lock down necessary data that the game needs to run. Run a virus scan.

Mac

  1. Close Battle.net and wait for Agent to disappear from Activity Monitor before relaunching Battle.net. If the issue persists, restart your computer and try again.
  2. If you're using wireless internet, try switching to an optimized wired connection.
  3. Damaged or missing data files may prevent files from downloading. Scan and Repair game files.
  4. Reset Folder & File Permissions for the affected game and Repair Disk Permissions to make sure there is no conflict between the latest OS update and your permissions.
  5. Security software may interfere with the Battle.net Update Agent and prevent it from running properly. Disable or temporarily uninstall any security programs.
  6. Programs running in the background can conflict with the Battle.net Update Agent. Try closing background applications.
Advanced Troubleshooting
  1. A corrupt Battle.net Tools folder may cause issues downloading files. Troubleshoot the Battle.net Tools folder.

Tried everything here?

If you have tried all of the steps for your operating system and still require assistance, please visit our Technical Support Forum (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) or contact us.

Get Help

Still can't find a solution? Submit a ticket and someone will help out!