This error may happen when something interferes with the Battle.net desktop app uninstall process.

Information on error BLZBNTBNA0000012

Information on error BLZBNTBNA00000004

Information on error BLZBNTBNU00000004

Troubleshooting for error 1016 in Diablo III

Troubleshooting for Error 10001.

Troubleshooting game or Battle.net services connection error BLZBNTAGT00000BB8

Troubleshooting issues with your game settings changing back to default when you log back in to the game

Troubleshooting for error BLZBNTBNA00000012

Information on error BLZBNTBNA00000A8D.