All login sites show error

Hello,

I've been experiencing problems with many login pages including Yahoo! Mail, facebook, and others. Every time I try to go to the login page (In Facebook's case, it's after I put my info in that it occurs) it shows me the message "Firefox can't establish a connection to the server at -----.com." I scanned my computer with Malwarebytes, but it didn't find anything. Can someone help me?

 

It was on all web browsers I have. I figured out what to do to solve the problem, I just don't understand it. It seems that the https pages are the ones that will not load. I researched some stuff, and I realized something was different from usual. My Norton Internet Security was not active. I opened it up and the https pages started working. My subscription expired a loooooong time ago, but I keep it there anyway. This is a fairly new occurrence, and I have no idea why it does that.

 

Well... None at the moment. Though I'm thinking I'll download AVG Free.