If you’ve just opened a drawing file in AutoCAD, BricsCAD, or DraftSight and were greeted by a dialog box mentioning vnsimli.shx , you are not alone.

This error usually appears when you receive a drawing from a Vietnamese firm or a contractor who uses specialized fonts for technical documentation. Without this file, your drawing will either show question marks ( ? ), blank text, or random characters instead of proper annotations.

Do you have a missing SHX file not listed here? Let us know in the comments below.