You have been disconnected. (BLZ51901017)

Information on error BLZBNTAGT00000907

If you do not have a decryption key, check the installation instructions for a point of contact.

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

How to resolve error BLZBNTBNA000000C8

Troubleshooting steps for Diablo II (2000) error "Your CD Key is currently being used by: Claimed on Battle.net."

Information and troubleshooting on error BLZBNTBNA000009C8

How to resolve this issue when installing or updating a game

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