I have one user out of a few hundred who is getting error messages when trying to access various websites like google.com.
He is connecting through a TMG 2010 proxy server and keeps getting Error code 64.
64 The specified network name is no longer available.
I can also see that windows update is trying to connect and the same error comes up.
We have tried changing over his PC to a new one, apparently that fixed it for a little while but the issue came back.
He is using IE9 - we cant use anything other than that due to company policy.