Forum Discussion
Make Adobe the default program to open PDF
Okay, I did make that change, and it is working as you stated. However, it is not exactly what I wanted. I would have preferred that Edge give me the option to actually open the file with Adobe, rather than having to go through the rather laborious task of saving it and then opening it in my preferred PDF application. Firefox gives me this option. I think that MS should investigate that option also. It would certainly make my life easier.
Thank you. 
Firefox must be using an extension/plugin to do that,
i've found some extensions you can try see if they will work:
https://chrome.google.com/webstore/detail/open-in-pdf-viewer/ehndikigeekodlnbohjndjjiikphickb?hl=en
https://chrome.google.com/webstore/detail/open-in-pdf-reader/cehiomcamjpnfmemkmpjadaclohoibgo?hl=en
Also if it works on Google Chrome, it is very likely that it will work on Edge insider as well, it's just a matter of extensions and plugins.
I could not get the viewer to work, and your link to the reader is broken; however, I did get the reader installed and working one I located it.
Thanks!
- Link is broken how?
i just tried them in an InPrivate browsing mode and they work fine.
so the reader extension now lets you open online PDF files directly in Adobe reader program just the way you wanted??