Hi Gilbeh,
After many searches, I've finally found the solution to this very annoying problem. Hope it'll work for you too. Read on:
https://superuser.com/questions/1237194/https-ssl-or-tls-issue-with-browsers-on-windows-10
In short:
Open a Command prompt with Administrative rights and type:
netsh int ip reset
And reboot.
That's it