Troubleshooting steps to resolve this error

Use the steps below to troubleshoot installation issues for Blizzard games.

We can't connect you to the Blizzard patch service. Please check your internet connection and try again.

This error occurs when your connection to our servers is blocked. This may be caused by a third-party program.

Information on error BLZBNTBNA00000066

Information on error BLZBNTBNA00000067

Information on error BLZBNTBNA00000065

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

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