Change the Default by Using Open With in File Explorer
1. In your File Explorer, right click on a PDF file, select "Open With", select "choose another app" to open the box "How do you want to open this file?".
2. Select Foxit from the list, and check the option "Always use this app to open .pdf files"3
3. Select OK to apply the change.
If
Foxit app is not listed in this box, you can scroll down to see
"More apps" link. Click this link to browse Foxit app. If still not see
Foxit, scroll down to see "Look for another app in this PC" link. Click
this link to browse to Foxit and choose the "Open" button to set it as
the default.
Change the Default by Using Default Programs in Control Panel
Open Control Panel and select "Default Programs". Click the link labelled "Associate a file type or protocol with a program", and wait for a couple of seconds to load all file types.
Scroll down the list to see .PDF entry. Click on ".PDF" entry, and then click the "Change program" button.
A pop-up will appear that will let you choose an app from the list.
If Foxit app is not listed in this
window, then you can scroll down to see "More apps" link. Click this
link to browse Foxit app. If still not see Foxit, scroll down to see
"Look for another app in this PC" link. Click this link to browse to
Foxit and choose the "Open" button to set it as the default.
Related Article:
How to set Foxit as Default PDF Reader
How to set Foxit as default PDF Reader by changing File Association in Windows