Many common hard drive or OS problems on a Mac can be resolved by running Repair Disk.

Information on error BLZBNTBNA00000001

Standalone patches are downloaded outside of the game launcher or the Blizzard Battle.net desktop app.

Information on error BLZBNTBTS0000000D

How to resolve error BLZBNTBNA000000C8

Information on error BLZHSBGS00000056

Information on error BLZBNTBGS00000056

If you try to install a game that doesn't support your preferred language, the game will install the default language for your region.

Troubleshooting error BLZBNTBNA000000CA

Troubleshooting steps for performance problems