[Solved]Your connection is not private
After refresh my computer (win 8.1) I had to reload Opera Browser
Opera is here but if I go to Facebook or Google search it says
Your connection is not private
you attempted to reach www.facebook.com, but the server presented a certificate signed using a weak signature algorithm (such as SHA-1). This means that the security credentials the server presented could have been forged, and the server may not be the server you expected (you may be communicating with an attacker).
You cannot proceed because the website operator has requested heightened security for this domain.
After stopping and disabling Background Intelligent Transfer Service
Opera browser is working
Don't know if that was the reason