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Wrong or Older Version of AutoCAD or F/X CAD Opens When You Double-Click a DWG File


Double-clicking a DWG file launches the wrong version of AutoCAD or F/X CAD.



You should be using the AutoCAD DWG Launcher as the default for opening DWG files.


If you are in fact using it, the DWG Launcher should launch the latest version of CAD installed on your computer. If you're configured to use the AutoCAD DWG Launcher and it's still launching the wrong version of CAD, you'll need to make some changes to the Registry files.




1. Verify that you've followed our steps to set the AutoCAD DWG Launcher to open your files using the latest version of AutoCAD or F/X CAD.


Are files still opening in the wrong version? Move on to Step 2.


2. Open the Windows Run dialog box by pressing the Windows + R keys (Windows keyboard) or Command + R keys (Mac keyboard).



3. In the Run dialog box, type Regedit and click OK.




4. Expand the following strings (folders) in the Registry Editor: HKEY_CURRENT_USER > SOFTWARE > Autodesk > DWGCommon > shellex > Apps. Select the string within the Apps folder. 




You should see the following list in the right portion of the Registry Editor:

  • DefaultResourceLCID
  • OpenDdeExec
  • OpenDdeSvc
  • OpenLaunch
  • PrintDdeExec
  • PrintDdeSvc
  • PrintLaunch
  • Resource
  • ResourceRootDir



5. You'll need to make some edits on a few of the Registry keys in this list. To edit a key, double-click it and change the text in the Value data dialog box.



Make the following updates:

  • OpenDdeSvc: Change (rxx.0) (r22 pictured to the right) to your desired version of AutoCAD or F/X CAD (example: 18 for AutoCAD 2018).
  • OpenLaunch: Update the path to reflect your desired directory.
  • PrintDdeSvc: Change (rxx.0) to desired version.
  • PrintLaunch: Update the path to reflect your desired directory.
Last modified on Jul 20, 2020


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