Diablo IV Error Code 1016

To help resolve connection errors while playing please try the steps below.

1. Reset your network devices to make sure your router hasn't become flooded with data.
2. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
3. Update your drivers and operating system to resolve any compatibility issues.
4. Release and renew your IP and flush your DNS to resolve any network conflicts.
5. Close all other applications to resolve software conflicts and free up resources.

If the previous troubleshooting steps didn't resolve the problem, you can ask the Blizzard player community for help on the tech support forums (if available) or other community gaming sites. Local computer or network technicians may also be able to help if you've exhausted all other resources.