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Why does Internet Explorer report content with security certificate errors?

We have a "wildcard" certificate installed on our webserver, allowing content on any subdomain to be accessed securely. We have discovered that when accessing pages with Internet Explorer on some machines, a notification appears stating the folowing:

To help protect your security, Internet Explorer has blocked this website from displaying content with security certificate errors. Click here for options...

This is ocurring on two machines running WinXP SP3 and IE8. It is also ocurring on two machines running Win7 with IE9.

We have checked through the source of the pages and checked that all linked content is being served without error.

An example of where this problem occurs is the page at https://members.chillisauce.co.uk/

Can someone please take a look and provide some hints on what is causing this issue?
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ChilliSauce
Asked:
ChilliSauce
1 Solution
 
GhousullahCommented:
Hi, gone through the link. Me too recieved the warnig message. when I try to view the certificate, I found that Key usage was having warning message. When gone through the usage it got all the parameters selected. As it was wild card certificate, all parameters might have been included. Please go through below two links that might give more idea about it.

But when I gave view certificate and installed in trusted root certificate store. The error has gone.

http://social.technet.microsoft.com/Forums/en-US/winserversecurity/thread/84eaa61f-d13b-4544-9185-078c014ab552/

http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/52b6faa3-5746-4e96-8777-7223e2ae508d/
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TheMakCommented:
I have sign up for new account on that site and did not got any certificate error. Please check system those are showing that error message.

Does the behavior persist if you start IE in No Add-ons mode?

   => Start | (All) Programs | Accessories | System Tools | Internet Explorer (No add-ons).

2. Does the behavior persist if you open IE (only) to http://support.microsoft.com/kb/923737, run the Fix It and then reboot?

3. What anti-virus application or security suite is installed and is your subscription current?  What anti-spyware applications (other than Defender)?  What third-party firewall (if any)?

4. Has a(nother) Norton or a McAfee application ever been installed on this machine?

5. Did a Norton free-trial or a McAfee free-trial come preinstalled on the computer when you bought it? (Doesn't matter if you never used or Activated it.)

Tip: Open Internet Explorer (only) to http://windowsupdate.microsoft.com | Select CUSTOM and scan | Install any Critical Security Updates offered (e.g., KB2416400).  If a Root Certificates update is listed (possibly in the Optional Software updates category on the left-hand side of the scan results window), install it to take full advantage of IE8's enhanced security.

http://answers.microsoft.com/en-us/ie/forum/ie8-windows_xp/internet-explorer-has-blocked-this-website-from/45ddb34b-3ea6-45b5-b26b-22c37af5b6c5

OR

First check your time and date settings to ensure that your computer isn't set in the future or past. This can cause a certificate error because your computer believes that the certificate being presented isn't valid yet or has expired. You can check your time and date settings by double clicking the clock that is displayed in your toolbar.

OR

http://answers.microsoft.com/en-us/ie/forum/ie9-windows_7/ie-9-bogus-security-certificate-errors-internet/394e1ffa-f05d-e011-8dfc-68b599b31bf5

OR

http://answers.microsoft.com/en-us/ie/forum/ie9-windows_vista/internet-explorer-9-script-errors-and-security/a1340e91-a151-e011-8dfc-68b599b31bf5


Regaards,
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