Empty PDF in Microsoft Edge

All of a sudden, when I open some (not all) PDFs they have blank contents in Edge.
No viewer like Acrobat or PDFXChange installed.
No viruses and SFC /scannow is all right.

I don't think it's browser related but a more generic PDF format filter (?) corruption in my registry or DLL registration. On other PCs with Windows 10 x64 I can see the contents with Edge.

Someone can help providing a registry fix?

Windows 10 x64 10586.164

Here is an online PDF example that looks empty on this PC (when loaded as default through Edge):

https://manuals.info.apple.com/MANUA...user_guide.pdf

This one opens correctly in Edge instead:
https://eaassets-a.akamaihd.net/eahe...s_PC_en_US.pdf

P.S.
Please, don't suggest me to install Acrobat, PDFXChange, Sumatra, FoxIt, NitroPDF or other tools as a workaround. I need to fix Windows default PDF filter.

N.B.: Solved! See post #32

Hi, not one I've come across, and I can't readily find a related thread.

So here's something you may find worth trying, and certainly should be aware of. I've used it a couple of times successfully.

An In-place upgrade repair install will fix many things, but not those where the settings are not changed by the procedure.

For this you need an installation medium with the same build as you have installed.
Repair Install Windows 10 with an In-place Upgrade - Windows 10 Forums
This will refresh Windows, after the manner of a Windows installation.
- all/most associations will be unchanged
- all your programs will be left installed
- you will lose any custom fonts
- you will lose any customised system icons
- you may need to re-establish your Wi-Fi connection
- you will need to redo Windows updates subsequent to the build you have used for the repair install
- Windows.old will be created
- system restore will be turned off- you should turn it on again and I recommend you manually schedule a daily restore point.
- you will need to redo any language downloads (other than the display language)

This is one of the better features of Win10: as each major build comes out, that's your updated reference build, and as updates are mostly cumulative, there will be few to do.

Recommendation:
Before you perform this major repair procedure, do create a disk image.

Please consider using disk imaging regularly. It's a brilliant way to
- preserve your system (and your sanity)
- back up your data
- restore your system to a previously working state in a relatively short time

Recommended: Macrium Reflect or Aomei Backupper (free) + their boot disk/device + large enough external storage medium.

Mm, guess you've benefited - like several others- from MS's cognitive built-in self-repair routine.
(If only!)

But disk images remain the essential backstop.

If I save https://manuals.info.apple.com/MANUA...user_guide.pdf locally in DOWNLOAD dir and open it with Edge, it will be fine...
Ideas why is blank only from a network connection?

EDIT: from local storage only some PDF open correctly. Some others are still empty.

Although I cannot give you the exact reason it probably is caused by one of the security settings, possibly in Edge. I wish I could tell you which one I don't know.