When you can’t open a PDF on your computer, follow the instructions below:
 First, install Adobe Acrobat Reader DC on your computer.
 Then set it as the default PDF owner.
 Or you can update Acrobat Reader DC or try repairing Acrobat Reader DC
If you still cannot fix the issue then you need to call Adobe Customer Care +1-844-762-3952 to get the help of specialized employees to help you fix the problem. This number is available for access throughout the day.
Read more: - Adobe Customer Service Number