It is always recommended to use legitimate licenses or the free / AutoCAD student version if budget is a constraint.

To resolve legitimate "Access Blocked" errors, Autodesk recommends installing the latest licensing service updates from your Autodesk Account.

The Hosts file is a plain text file found in every major operating system (Windows, macOS, Linux). Its job is to map hostnames (like www.autodesk.com ) to IP addresses.

The web-based version is for basic viewing, light editing, and markup. It runs in a browser. No installation, no crack, no hosts file editing.