Si tienes problemas para descargar desde la pagina de blizzard prueba con los siguientes enlaces:
[Main Thread] "Failed - Network Error" with Battle.net Set-up file
Greetings, all! We are seeing a large influx of reports of the Failed - Network Error recently. We are aware of the issue and our team is looking into this issue. This is a common error to occur when there is a problem with connecting to our patch servers.