Autocad Block Host File Updated [NEW]
Starting with AutoCAD 2018, Autodesk implemented a change where the Host file retains the block definition data of an Xref even after it is unloaded.
This update provides several advantages for CAD managers and designers:
If you meant how to update the content inside a block (like editing text or attributes): autocad block host file updated
How to Update Block Definitions:
Sometimes, a drawing contains two blocks with the same name (one defined internally, one referenced externally). AutoCAD attempts to reconcile these by updating the host file to match the primary definition, triggering the notification. Starting with AutoCAD 2018, Autodesk implemented a change
| Do This ✅ | Avoid This ❌ |
|-----------|---------------|
| Store the host file on a fast, reliable server. | Save it on your local C: drive (others can’t reach it). |
| Use a naming convention with versions (e.g., Blocks_v2.dwg). | Overwrite the host file while users are actively inserting from it. |
| Run AUDIT and PURGE on the host file weekly. | Define blocks with the same name as standard AutoCAD blocks (e.g., Table). |
| Notify the team via chat/email when you update. | Assume AutoCAD will automatically "see" the changes—it won't. |
A mid-sized MEP firm had 12 drafters each maintaining local copies of valve blocks. When a manufacturer changed a valve dimension, the CAD manager had to send out a "fix" batch script. | Do This ✅ | Avoid This ❌
After switching to a Block Host File:
