This error usually happens when our patch servers are down, but could be caused by local network issues as well.

Troubleshooting being unable to install or patch a Blizzard game being accessed through Game Pass

Did not receive War-Torn Reins of the Undercity Plaguebat or Smoldering Reins of the Teldrassil Hippogryph

Information about why you may not have the achievement or title, even if you have completed the quest and can use green fire.

Information about a connection issue caused by right clicking while Dragonriding

Information on not being able to complete Legion blacksmithing quest due to missing reaagent in crafting interface

The version of the game you are attempting to play does not match our current game servers.

Information on an issue where spell icons for dracthyr grey out even when they are ready to be used

Post 9.0, the requirement to use Loot-A-Rang has increased.

This error means the Battle.net Agent (the process that installs and patches our games) couldn't stream necessary files.