I made the mistake of asking for help from OneDrive Support on this problem!
after several email exchanges and screenshots, they seem to be in denial that their precious baby might not be blameless!
I created a PDF of a Recipe on my old Vista machine (583kB) and uploaded it to my OneDrive account.
accessing it is just fine using Firefox ESR, it displays all, ...Text and picture of the "Dish".
Accessing the same file on my Win 10 machine via the Offline folder, I can view it either in "Edge" browser or via "PDF Reader", either way, the file only displays the picture, no text.
The alternative is to access the online OneDrive site and navigate to the same file there, ...and it displays just fine in "Edge". download a fresh copy to the offline Folder and try to view it in Edge or PDF Viewer, ...no text again!
OneDrive Support asked me to view it using IE9, Via the online site and of course, it displays fine there as well.
I then made the mistake of adding IE9 to the context menu list of "Open With" options, selecting that however didn't open the file immediately but opened a generic warning about files from other computers and proceeded to open it in Edge!!...not what I wanted, so I tried to remove IE9 from the context menu options.
I seem to recall that to do this in Vista you just hovered the pointer over the offending item and pressed "Delete" on the Keyboard, ...doesn't work in Win 10.
Can anyone tell me how to get rid of the blessed IE9 which I've added to the "Open With" options??