
pdf files always open in your selected app.

What are the possible solutions to this problem? Let us have a glance.

This means that Edge will or may take over the PDF file default setting due to any reason, after an update or any other cases, and you will be notified about the app reset to default setting by the Action Center. Whenever any no file association is found in the registry or in case any of the application incorrectly makes the hash void to “UserChoice registry key” to the set association then it triggers resetting of files for that program, making it switch back to the default Windows 10 set association. Windows 10 File association protection mechanism is actually what that prevent any form of direct change to the User Choice in the registry for each form of a file. Most of the people prefer to use Adobe Reader to view their PDF files as the software provides a flexible approach to opening, editing, and formatting the files.

But this is a minimal function option that may not meet the needs of users accustomed to using a third party software that is far more feature rich. In fact, Microsoft Edge, the default Web browser, provides native support for this type of file. PDF files with Windows 10 can be opened without the need to install additional software.
