Dec 21, 2009 10:50 AM|Preston B|LINK
An automatic update or certain virus protection apps may have made a change to your 'hosts' file.
Your "hosts" file is what tells your computer that "localhost" should map to "127.0.0.1" so here is where your file is:
Close Visual Web Developer and any browser that is open.
Locate the 'hosts' file using Windows Explorer
Open that file in Notepad under a 'computer administrator account'. The following entry should be present. If it is not, or does not look like the following, add or edit the entry:
Save the file and try again.