What to do if you get the error “The Offer is Not Available?” when purchasing a product offered at a discount.

What to do when you receive the error "The phone number is invalid" when adding a phone number to your Battle.net account

Information about this error when adding a phone number or a Battle.net Authenticator to a Battle.net account.

What to do if you receive an error that your code is already claimed in your account.

Troubleshooting for game crashes with error "The application encountered an unexpected error"

What to do if you can't save your communication preferences in the Account Management page.

Troubleshooting steps for crash problems

Follow these steps to return your game client’s language settings to default.

Information regarding steps you can take if your email address is already in use on an account.

Information about this error when redeeming a code on your Battle.net account