You have been disconnected. (BLZ51901017)

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

How to resolve error BLZBNTBNA000000C8

Information and troubleshooting on error BLZBNTBNA000009C8

Your installation could not be started. Please try again.

Can't log into Battle.net website or get online when logging with the Battle.net desktop app.

The login servers received invalid information

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

Your Battle.net account does not have access to this beta content. 

How to resolve this issue when installing or updating a game