How can I change all the PDF file icons back to the way before?

When you install the new program iSkysoft PDF Editor 6 Professional, it will change to be the default PDF opening program on your computer. If you wanna change back, you can go through the following steps:

1. Randomly select one PDF file from your computer, right click it.

2. Click Open with>Choose another app.


3. Click the program that you want to set as the default program to open PDF file in you computer.

4. Choose the option of Always use this app to open PDF files.


5. Click OK and it is done.