Sometimes when you click a link or try to open a document within Windows 10, the computer may not use your preferred program. The solution to this problem is outlined below. From the Default App Settings page, you can change things such as your default web browser as well as the program that is used to open PDF's.
1.) Click within the Search field at the bottom left-hand corner of the screen and type in Default Apps and press "Enter".
2.) In the Default Apps Settings page, you will see all of the default applications that are currently being utilized. Select the category you would like to change and from the drop down list, choose the application you would like to to use as the default instead.
3.) To reset your default settings, select Reset at the bottom of the settings page.
4. At the bottom of the screen, you can also set default apps by file type, protocol, or set defaults by app. If you have Adobe Acrobat Reader or Pro installed and PDFs are not opening in Adobe by default, you can change those settings here.
5. Select Choose default apps by file type. They will come up in alphabetical order and you will want to scroll down until you see .pdf. If Adobe is not selected as the default app, click on whit is listed and select Adobe Acrobat from the list.