How to turn off the unreconciled layers notification in AutoCAD

Solution:

Try the following steps:

1. For the active drawing, change the system variable LAYERNOTIFY to 0 (zero) or click the Settings button in the upper-right corner of the layers palette.
2. Uncheck "Evaluate New Layers Added to Drawings."
3. To turn off the notification for all drawings, change the system variable LAYEREVALCTL to 0 (zero).