Login Issues (NA)

I have been not able to get on to league of legends today and I don't know why. I click on the desktop icon and it shows the loading logo but then shows an error message on the client stating "There was an unexpected error with the login session. Please try again."

I restarted my computer and tried opening League 6-8 times but to no avail. I even tried running as administrator! :( Please help. Thank you.