|I tried to compile a list of everything that works on this in order |
of likelihood of success:
1) virus / worm
unwise.exe, a phony Windows Antivirus program, and a
rootkit named tdss may have caused this problem.
run gmer, combofix, and malwarebytes to clean the computer
2) Uuninstall Norton products with symantec removal tool (an
old symantec install may have left deviant code.) Norton may
have bits and pieces left on teh disk, use Norton Removal
5033108162039 to get EVERYTHING. McAfee, Trend Micro,
and Zone Alarm have all been causes of this proble,
seemingly due to a conflict with a windows update. Using
approrpaite uninstallers or teh Add/Remove Programs Control
Panel, you may want to uninstall your Anti-Malware entirely;
disabling alone may not be adequate.
3) Try to 'telnet google.com 80', 'ipconfig /renew' from the
command line, or right click the connection icon and select
If either of those give you a weird error, then it's probably
winsock corruption (Which only affects TCP, so i.e.: PING
works (IP only), but a TCP connection does not)
Run winsockfix or follow directions at:
4) The Cisco VPN client has sabotaged browsing in one
case. If you use it, reinstalling it may help.
5) Replace hosts.ini with only 127.0.0.1 as an entry.
6) Ensure no proxies have been set if you don't have any. In
internet explorer, click tools > internet options. Then click
connections and LAN settings. Remove the checkbox for 'use
a proxy server'.
7) Revert to an older driver (or upgrade to another.) You may
need to run winsockfix again
8) Set BIOS to defaults to undo any overclocking
9) At cmd prompt, type: ipconfig /flushdns