For non-supported languages, the Blizzard Data file is available in English.

What to do if you did not get the achievement "Fake It 'Til You Make It" after defeating So'leah.

What to do if emails you receive from Blizzard are not in your own language

There's a problem with the connection to the Blizzard servers.

How to download the English-language installer

Information on the BLZBNTBTS00000011 error

Information on the BLZBNTBNA0000000C error

The Battle.net Deskop App can't be launched due to an operating system error.

This is about the refund of the classic game (Diablo II, Diablo II: Lord of Destruction) that Blizzard released in the past.

Information on how to change the registered Battle.net account holder name