Failed to Download a Required Update

Keywords: BLZAPPBTS00006, BLZPTS00006, BLZBNTBTS00000046, BLZBNTBTS00000048, BLZBNTBTS0000004A
Failed to download a required update. Please check your internet connection and try again.
Errors: BLZBNTBTS00000046, BLZBNTBTS00000048, BLZBNTBTS0000004A, BLZBNTBTS00006

The Blizzard Launcher cannot download new patch data from our servers. This is usually caused by an unstable internet connection or a third-party program that is blocking access. Follow the steps below to resolve the issue.

Windows

  1. If you're using wireless internet, try switching to an optimized wired connection.
  2. Programs running in the background can conflict with the Battle.net Update Agent. Close any running background applications.
  3. Security software may interfere with the Battle.net Update Agent and prevent it from running properly. Disable or temporarily uninstall any security programs.

Mac

  1. If you're using wireless internet, try switching to an optimized wired connection.
  2. Programs running in the background can conflict with the Battle.net Update Agent. Close any running background applications.
  3. Security software may interfere with the Battle.net Update Agent and prevent it from running properly. Disable or temporarily uninstall any security programs.

Tried everything here?

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

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