Diablo IV Error Code 300008

Try all of the following steps to resolve this connection issue:

1. Check for breaking news on the login screen or follow @BlizzardCS on Twitter for service updates.
2. Reset your network devices to make sure your router hasn't become flooded with data.
3. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
4. Check your network configuration to find any issues with your firewall, router, or port settings.

Tried everything here?

If the above steps did not resolve your problem, visit our Diablo IV forums.