How to open .DWG files on Windows
To open .DWG files on Windows, install a DWG-capable app such as Autodesk AutoCAD or Autodesk DWG TrueView (viewer).
Step-by-step instructions
- Install a DWG-capable app such as Autodesk AutoCAD or Autodesk DWG TrueView (viewer).
- Double-click the .DWG file, or right-click it → Open with → choose AutoCAD/DWG TrueView.
- If it still won’t open, try opening it from inside the app (File → Open) to see any version/repair prompts.
Recommended software
- Default Photos app
- Browser preview
- GIMP
Alternative methods
- Open .DWG in a browser-based viewer if desktop apps fail.
- Try opening .DWG on Windows with a secondary app to rule out app-specific issues.
- Convert .DWG only with trusted tools when direct opening is not possible.
Common issues
Unsupported or newer DWG version
DWG files are versioned; a viewer/editor may refuse to open a file created by a newer AutoCAD-based product.
- Try opening the file in a current Autodesk tool (AutoCAD or Autodesk DWG TrueView).
- Ask the sender to save/export the drawing to an earlier DWG version compatible with your software.
- If you have the file open in DWG TrueView, use its conversion capability to save to an older format when available.
The file is corrupted or incomplete
If the download/copy was interrupted or the file was damaged in storage, DWG software may error out or show missing content.
- Re-download or re-copy the DWG from the original source (preferably via a reliable transfer method).
- Try opening the file in an alternative DWG-capable tool (for example, AutoCAD vs. DWG TrueView) to confirm whether it’s a file issue or a software issue.
- If the file opens but content is missing, request a fresh export from the original authoring system.
Wrong file association (opens in the wrong app)
Your OS may be set to open .DWG with an app that cannot read CAD drawings.
- Windows: Right-click → Open with → Choose another app → select AutoCAD or DWG TrueView (optionally set as default).
- macOS: Control-click → Get Info → Open with → select the correct CAD app → Change All.
Security note
Treat DWG as a complex, structured document: opening untrusted drawings can expose you to parser vulnerabilities in CAD/viewer software. Prefer opening unknown DWG files in trusted, up-to-date viewers (for example, Autodesk tools).