Restart your computer. The error
may not persist.
Install the latest version of
Restart your router, switch,
cable/dsl modem and any other network hardware that communicates to
Scan your computer for viruses.
(Windows XP only) Disable
Windows Firewall if you have a third party firewall installed. Two
firewalls running in sync tend to conflict with one another and can
cause this error.
Update all firewall and security
software. If you are already up-to-date, try a clean installation of
your security software.
Install the latest Windows
Delete temporary Internet
Increase the frequency that
Internet Explorer 7 checks for new versions of web pages.
Disable Internet Explorer 7
add-ons individually. Add-ons can cause this error and selectively
removing them can help you identify which one is causing the error.
Reset Internet Explorer 7
security options to default.
Incorrect or overprotective
security settings can sometimes cause this error. Return security
settings to default.
(Windows XP) Move the Internet
Explorer 7 temporary Internet files folder to it's default location.
Disable the Phishing Filter.
Disable the Protected Mode.