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This article covers unexpected Blizzard Update Agent errors.
Troubleshooting for when one of your games is installed, but the Battle.net app is still giving you an "Install" button instead of "Play."
Troubleshooting step for connection-related problems on Windows.
What to do if you are unable to use a payment method that you've used in the past.
If you try to install a game that doesn't support your preferred language, the game will install the default language for your region.