A is a standard AutoCAD drawing ( .dwg ) that acts as a library container. Instead of inserting blocks from individual .dwg files, users insert blocks from this single host file .
How to Fix the "AutoCAD Block Host File Updated" Error: A Complete Guide
Depending on whether you want to accept the updates or keep your current drawing layout exactly as it is, use the following methods to resolve the notification. Method 1: Redefine the Block via the Insert Command