The hosts file is a local plain text file used by your operating system to map hostnames to IP addresses. Before your computer queries a DNS server, it checks this file. By adding an entry like:
Instead of the photorealistic, sun-drenched library Ms. Vance was expecting, the screen displayed a grey, void-like box. Because the texture servers were blocked, the bricks were a default hot pink. Because the 3D Warehouse was blocked, the furniture he had hot-linked hadn't loaded. block sketchup host file free
If you're looking for a free solution to block SketchUp host files, here are some options: The hosts file is a local plain text