Troubleshoot: Unable to Download Battle.net If you are , the issue is typically rooted in unstable network conditions, background software interference, or corrupted temporary files. Whether the download fails to start, gets stuck at 0%, or returns a network error, you can resolve most issues with a few systematic steps. 1. Resolve Network and Connection Blockages

Blizzard Battle.Net stuck at 0% installation - Desktop App Tech Support - Blizzard Forums

Connection issues are the most frequent cause of failed downloads. A "Failed - Network Error" often indicates your system cannot reach Blizzard’s patch servers.