I have the same question about a problem I see a lot. The problem, "Numerous web pages won't load in Microsoft Edge.(Windows 10 go figure)". This problem happens suddenly. It seems to be because I signed my computer out of my Microsoft account (about 13 days ago the computer stopped "syncing" to date, time, region information to the Almighty Microsoft cloud in the sky).
The RESULT!!! My edge browser can't verify ANY websites certificates and I can't access any of said websites. More fun... simply going in and setting the time/date/region setting to automatic WON'T FIX THE PROBLEM! WHY??? Because the the "sync" function can't work without verifying the Microsoft website's CERTIFICATE!!! AND THERE IS LITERALLY NO WAY TO WORK AROUND THIS!!!!
WHY? from DAYS OF EXHAUSTIVE RESEARCH it seems to be tied to the desire Microsoft has to make us all REGISTERED USERS!!! SO instead of admitting this issue on every related question, on every forum, on every possible comment that one could click on searching for a solution to your specific hang-up; Microsoft keeps having tech responders post the SAME basic "restart this, or "check that". When the solution usually lies with us "users" trying to use good ole Windows the same way we did from 93 to 07 (like it was originally intended). Free from being a "registered user"!!
Someone, anyone please help with a solution to update my computer so that it may read website certificates and be able to access VERY NECESSARY information so this STUPID MACHINE WILL RUN AS INTENDED!!!
For the record I have ALREADY:
Reset my network
Reset my Router
Checked my network with other devices
Cleared History, cookies, cache
setting my time /date/ region to automatic
checked my location settings
Flushed my DNS
Used a different DNS than my ISP
Uninstalled antivirus 3rd party software
Uninstalled/reinstalled web browsers (chrome, Firefox)
Turned off/on my firewall
run in safe mode
Created a new user profile
searched exhaustingly for malware
Searched exhaustingly for answers
...and much, much more
***moved from Microsoft Edge / Website issues / Windows 10***