Use the steps below to troubleshoot installation issues for Blizzard games.
Troubleshooting for problems installing or patching the World of Warcraft game client
Information on what to do when a game update is stuck at 0 B/Ss
Installation or patch seems to be stuck at Fetching Encoding Table
Information on error BLZBNTBNA00000008
ERROR #134 (0x85100086) Fatal condition! Failed to open required archive ... with error: 5
How to run a pathping on Windows and Mac.
Information on error BLZBNTAGT0000085C
Information on error BLZBNTAGT0000083F