Payment failed. Your financial institution may be denying the payment. Contact your bank or credit card issuer for help.

What to do if you do not have a Battle.net account but are receiving emails from Blizzard Entertainment

This warning displays if you don't have enough available memory on your system to use your current settings.

If you experience crashes, blue or black screens, performance issues, or your computer locks up while playing, follow the steps below to resolve these issues.

Blizzardバランス用のコードを引き換える方法

複数のBattle.netアカウントを1つのアカウントに統合する方法。