Information on age-restriction related error messages and how to resolve them

What to do if you can't open the Battle.net desktop app, and there are no error messages when you try.

Troubleshooting steps for the BLZBNTGFT00000005 error

Information on error BLZBNTAGT0000085C

Information on error BLZBNTBNA00000067

Troubleshooting steps for "Waiting on Another Installation or Update" error when trying to update a game.

The client you are using to log in to the game is out of date or there is a mismatch between the client and server versions

Addressing issues when Battle.net Application is stuck on Downloading New Files when launching or installing.

World of Warcraft does not support 32-bit operating systems.

Information on error BLZAPPBTS0000F