How to configure PDF viewer for STM32 cubeMX v6.16.1

[mlisowsk]

I have just installed STM32 cubeMX v6.16.1 on my Windows 10 machine have the following issue:
In the Pinout&Configuration step we can hover mouse over items in the left tree view and eventually we can click on links to Related Documents. However those documents open in Acrobat Reader on my machine, even tough I have configured PDF-XChange Editor as default PDF viewer (Windows Settings, Apps, by ending, .PDF -> PDF XChange Editor).

When I double-click PDF files in Windows Explorer they properly open in PDF Xchange, not Acrobat Reader.

Having PDFs open in Acrobat is really annoying due to the constant popups and waste of screen space with useless tabs.

[TDK]

Running regedit and searching for "Acrobat Reader\Reader" or "AcroRd32.exe" or whatever the exe is should find it quickly.

[mlisowsk]

It seems I cannot easily fix this issue and I don't want to risk messing up the Registry. Although having a link to the exact location in the data sheet is very nice, I guess I'll let it be and just Alt-Tab to the datasheet. 

Thank you for your inputs @Pavel A. and @TDK !