So whenever I try to access any servers I get the issue: 

"Failed to login: The authentication servers are currently not reachable. Please try again"

I cannot connect to any server, though single player works perfectly fine.

I've tried everything from restarting numerous times and uninstalling and installing, to deleting and re-entering servers. 

I've played minecraft servers on this same computer before, it's just with a different account this time.