1 person found this helpful
For Windows: Start>Control Panel>Programs>Default Programs>Associate a file type or protocol with specific program
Windows tends to use the last installed version as the default. It's theoretically possible to hack the registry to change it, but I've never had any luck using the file association method Salah describes.
You could try reinstalling CC again so it becomes the last one installed, or you can buy the Soxy plugin from Rorohiko.com, and all your ID files will oepn in the version they were saved in when you double-click.
Following steps has worked for me (on Windows 7)
Here is my method...
1. Find out your InDesign CS6 executable program file (usually: "C:\Program Files (x86)\Adobe\Adobe InDesign CS6\InDesign.exe")
2. Rename the file (ex.: "InDesign.exe.old"). This version of InDesign will be temporary disable to run.
3. Right click on any .indd file and select "Open with..." in the menu.
4. Now you can see that the default program InDesign CS6 is no more available in the top applications list.
5. Make sure that the "Always use..." option is checked and browse to InDesign CC executable program file (usually: "C:\Program Files\Adobe\Adobe InDesign CC (64 bit)\InDesign.exe")
Now all your .indd files will open by default with InDesign CC.
6. Rename your InDesign CS6 executable program (previously named: "InDesign.exe.old") to "InDesign.exe" to make it back enable to run.
After this last step, InDesign CC still remain the default program to run .indd files but both versions of InDesign (CS6 and CC) would be now available under the "Open with..." menu. Than you will be able to select what version of InDesign you wish to use to open your .indd file and/or select your prefered version to be the default version.