Hi,
First check network settings if are correct - I mean DNS servers (connection
properties) and proxy settings (Internet Explorer -> Tools -> Internet
Options -> Connections -> LAN Settings) if you use. If everything is correct
there, open Start menu -> Run -> cmd and check e.g. nslookup
update.microsoft.com ... addresses should be ... 65.55.192.*
If you are/was infected by an malware you can check also HOSTS file
content - is placed: windows\system32\drivers\etc.
Marcin Domaslawski
U¿ytkownik "(e-mail address removed)"