If you are trying to open a PDF from an Internet Page and it is opening in Edge instead of Acrobat Reader, it is because Edge is your Default PDF Reading program.
If you click on an email address on the web and it opens with Edge or some other page, it is because Microsoft Outlook is not your Default Mail Program.
The steps below will help you change your Default Programs.
- On the Start menu, search "Default Apps", and select the result.
- Search for the default file/link type you want to set, and then choose the desired app.
- Alternatively, you can search for the desired app and click on it to see what file/link types are currently associated.