If you want to set Adobe reader as default app for opening PDF documents please follow the next steps:
Write in the search bar Default apps
Click choose default apps by file type
Select Adobe Reader for pdf.
Click set as default
Setting Adobe Reader as the default app for opening PDF documents
If you want to set Adobe reader as default app for opening PDF documents please follow the next steps:
Write in the search bar Default apps
Click choose default apps by file type
Select Adobe Reader for pdf.
Click set as default