Need to update the phone number on your Battle.net Account?

Use this page if you want to update the mailing address for your Battle.net Account.

Change your Battle.net Account email address.

This is information regarding convenience-store payments, Battle Coin prepaid cards, and KakaoTalk Gift (Battle Coin) payments.

There's an error with your payment authorization. Your financial institution may be denying the payment. Contact your bank or credit card issuer for help.

What to do if your purchase made with a PaysafeCard failed.

Troubleshooting for latency and connection issues in Heroes of the Storm.

Troubleshooting steps to resolve lockups or crashes in Heroes of the Storm.

Troubleshooting for problems installing or patching the Heroes of the Storm game client

If you have issues with the sound in your game, such as skipping, popping, screeching, or no sounds at all, follow the steps below to troubleshoot the problem.

Information regarding Blizzard's stance on input mapping, as it relates to game controls

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