Hi @Deepak-MSFT
I have installed edge Canary/beta and Dev, same Problem not being able to open pdf successfully. By dragging the file or by double clicking = same problem,
and assigning each one of them as Default PDF reader, and even restarting the Device doesn't help.
and no Popup to select the app to open PDF after setting a default Pdf reader. this Popup only shows after installing a new app that supports opening PDF files. and even selecting from the Popup is the same Problem Not able to open PDFs successfully. and starts downloading the file as before. and I even made sure that every option has discussed here is set up right.
no luck for me:)
I am pretty sure that this problem will resolve by reinstalling the OS Because it has appeared after Updating to 21H2, a clean install will sure Fix this, I hope so.
Thanks for all the Help @Deepak-MSFT