Make Acrobat or Reader the default application for PDF files on Windows 7

See the steps below to change your default PDF application to Adobe Acrobat or Adobe Reader on Windows 7.

Steps:

1. Right-click the thumbnail of a PDF file, and then click Properties.
   
   

2. In the file's Properties dialog box, click Change.
   
   

3. Choose Adobe Acrobat Reader or Adobe Acrobat, and then click OK.
   
   

4. In the Properties dialog box, click OK.