When opening drawings from IE, the first application opened would receive priority, whereas if you open something in Windows Explorer the last one would (but here you could also manually open them). The problem now occurs when trying to open up drawings from Internet Explorer. I normally only work in 1 of the applications and the other one would only be used for opening up drawings (read only). I have a different problem, but relating to opening up drawings.Īs a standard procedure I normally have 2x AutoCAD 2014 instances/applications open at any time (for easier viewing and editing). Locate “AutoCADDWG Launcher” within the “Opens With” dialog, and click OK.ĭouble-clicking DWG files from Windows Explorer should now open drawings in a single session of AutoCAD.On the General tab of the Properties Dialog, select the “Change” button next to the “Opens With” property.Right-click on the DWG file and select Properties.To set the “AutoCAD DWG Launcher” as the default program for DWG files: Instead, the default program associated with DWG files should be the “AutoCAD DWG Launcher”. Although it might seem logical to set AutoCAD as the default program for DWG files, doing so will cause every drawing to open in a new session of AutoCAD. While it’s certainly possible the SDI variable was changed from its default value of 0, the more common cause to drawings opening in a new session of AutoCAD is related to the application associated with DWG files on your computer.
Set the Default Application to open DWG Files At the Enter new value for SDI: prompt, enter “0”.To verify multiple documents are supported in AutoCAD:
It’s rare for the setting to get changed, but the SDI variable controls whether AutoCAD opens every drawing in a new session of AutoCAD, or allows multiple drawings to be opened in a single session. There are two settings to check if you run into this issue: Single Document Interface (SDI)Īlthough all current versions of AutoCAD can open multiple drawings at once, this hasn’t always been the case. The behavior most AutoCAD users expect is double-clicking a DWG file will do one of two things launch AutoCAD if it’s not already running, or open the DWG in an existing AutoCAD session.Īlthough all current versions of AutoCAD allow for multiple drawings to be open at once, some AutoCAD users have observed double-clicking a drawing from Windows Explorer will open the drawing in a new session of AutoCAD instead of an existing session of the application. I look forward to sharing some new tips & tricks I have been gathering for some time in some future blog posts, but first a quick tip for controlling the way AutoCAD drawings open when you double-click on a file from Windows Explorer. Now that my upcoming book AutoCAD 2015 and AutoCAD LT 2015: No Experience Required is off to the printers I can (hopefully) begin giving my blog the attention it deserves.
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