Security Certificate Was Issued by a Company You Have Not Chosen to Trust

J

Joseph Morales

When visiting websites, I frequently get the message "The security
certificate was issued by a company you have not chosen to trust..." Even if
I OK the message or install the certificate, I continue to get many more
such messages, sometimes one for each graphical element that loads on the
page.

Some of the issuing authorities that cause complaints are the Equifax Secure
Certificate Authority, Thawte Server CA, and Secure Server Certification
Authority. However, these companies are already listed in my Tools /
Internet Options / Content / Certificates / Trusted Root Certification
Authorities.

My system is on Windows 2000 Server Build 2195, Service Pack 4.

Windows Hotfixes installed are KB822831, KB823559, KB823980, KB824105,
KB824146.

Internet Explorer is 6.0.2800.1106, with SP1, Q810847, Q813951, Q813489,
Q330994, Q818529, Q822925, Q828750.

I found a couple of relevant Knowledge Base articles at
http://support.microsoft.com/?id=297681 and
http://support.microsoft.com/default.aspx?scid=KB;EN-US;q308087.

Of these, http://support.microsoft.com/?id=297681 explains how to find a
root certificate by double-clicking the lock icon in the status bar, and
then exporting and importing the certificate. This has helped in some cases
but is not always possible to use. If the page has mixed content, no lock
icon appears so I cannot find the root certificate.

The other article,
http://support.microsoft.com/default.aspx?scid=KB;EN-US;q308087, does not
appear to apply becuase "Check for server certificate revocation" is
disabled in my browser and IE is not configured to automatically detect
proxy server settings.

I also tried disabling the "Check for publisher's certificate revocation"
and "Warn about invalid site certificates" options, but this didn't help.

I recently used Windows Update to install an updated list of trusted root
authorities, but this didn't make any difference.

I have access to two other PCs at work, running Windows Server 2003 and
Windows XP, and neither one of them has this problem.

Thanks in advance for any suggestions!
 

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