This one has me stumped. My dad's PC has all of a sudden stopped opening web pages and dropbox won't sync (message says "cannot establish a secure connection). It is connected to the network, and other devices on the home network have no issue. All devices (including router) have been rebooted. He can ping www.google.co.uk from command line, but from IE it will not open this or any other page. Malwarebytes has been able to connect online and update itself.
He's turned off Windows firewall, still the same.
Any ideas from anyone ?
He's turned off Windows firewall, still the same.
Any ideas from anyone ?