It seems I am no longer able to access ANY website.

Every time I try to access a web page I get "Your connection is not private" and no option to continue (Great decision here, guys. Really great decision.). I tried checking my network settings, I tried chancing Windows settings, disabling the AV and Firewall, reinstall Opera, clear cache and delete the user profile folder, nothing helped. Yesterday all was fine and now only Opera seems to be having these issues. Even IE works fine.

Any ideas?

I am using Windows 10 x64 1709 and Opera 52.0.2871.99