CAD tip # 1739:

Question

CAD

% platform category

I have a set of DWG files which are not recognized by AutoCAD.

Please verify you are using the right (latest) version of AutoCAD to open the drawings (see DWG versions in Tip 868).

Your DWG files may also come from an old CAD application "DRAFIX" which has used the same extension but a completely different file format which is not readable by AutoCAD. Such "DWG" files start with binary (hex) values 04-05-00.

ACAD

*CAD

21.11.2001 8805×

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this tip shared by ARKANCE experts applies to: AutoCAD ·

See also:
Tip 15038:	Texts exported from AutoCAD to PDF appear slightly smaller and misaligned.
Tip 15017:	AutoCAD Drawing Cleanup Utility - a standalone tool to purge your DWG files.
Tip 14953:	Importing ECLASS files into AutoCAD Electrical.
Tip 14849:	How to re-export a PAT hatch pattern from Revit?
Tip 14833:	CAD formats supported in Autodesk VRED 2026.

Selected tip: How to export an AutoCAD DWG drawing to a hi-res raster file (e.g. TIFF,JPG)?

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