This article explains the process of creating system files

Information on error BLZ51900011

Information on the silence penalty in Battle.net Groups

How to block communication from another player in Diablo III.

What to do if you have lost the password for the Blizzard Data file.

My credit card, bank account or PayPal has a charge from Blizzard that I don't recognize.

How to block communication from another player in the Battle.net Desktop App.

Information about why you may not be able to post in the forums, and steps for how to fix it.

How to manage your Battle.net profile visibility and chat settings

This article explains the process of speaking to a customer support representative or Game Master (GM).