Failed to create a required file. Please make sure you are running this program as an administrator and try again.
This error occurs when your connection to our servers is blocked. This may be caused by a third-party program.
This article explains the process of creating system files
Failed to download a required update. Please check your internet connection and try again.
Troubleshooting steps to resolve this error
The Battle.net desktop app is trying to connect to an invalid or nonexistent server.