• Go and click on the Application menu (The big Red A or the Red Diamond symbol in 2019)
  • Click on Option
  • Go to open and save tab on Option dialog box and click on AutoCAD 2010 Drawing (*dwg) drop down to select AutoCAD 2007 Drawing (*dwg)

Note: Any of your save design now save as 2007 version so that a user of AutoCAD 2007 can view your design but when you leave at 2010 you restricted 2007-2009 users from viewing your design.

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