Very Strange Network/Internet access problem

Lee

Lee

Associate
Joined
21 Dec 2006
Posts
478
Location
Northampton
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 ?
 
Interestingly it won't allow a remote or local Teamviewer connection either.
 
Thanks guys. Have checked date and time, all normal. Will get him to try the Mtu thing.
 
Check the DNS server settings as well. Try changing to 8.8.8.8 and 8.8.4.4 and see if that helps.

What network adapter is it and what version of Windows?
 
Thanks for the advice guys. He's brought someone in to fix it (rebuild in the end I think)
 
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