Adobe Acrobat Reader has always been my default application for opening PDF files ever since PDF files were first introduced.
To the best of my knowledge, up until now, I've never experienced a situation where Adobe Acrobat Reader could not open a PDF file unless the PDF file was corrupted or otherwise contained an error that could not be automatically remediated by Adobe Acrobat Reader.
Adobe Acrobat Reader has always been my default application for opening PDF files ever since PDF files were first introduced.
To the best of my knowledge, up until now, I've never experienced a situation where Adobe Acrobat Reader could not open a PDF file unless the PDF file was corrupted or otherwise contained an error that could not be automatically remediated by Adobe Acrobat Reader.