Root signing issue - Internet explorer 7 un-patched clients do not recognize the ValiCert Root CA
2 years ago
Originally Published: 2008-03-24
Article Number
000057857
Applies To
RSA Public Root Signing
Microsoft Windows Internet Explorer 7.0
Issue
Root signing issue - Internet explorer 7 un-patched clients do not recognize the ValiCert Root CA
ValiCert Root CA not listed in IE 7 browser on Windows Vista
Resolution

In early versions of IE 7.0 ( IExplorer 7.0.6001.18000 Updateversion: 0 & IExplorer 7.0.6000.16386 Updateversion: 0 ) do not have the ValiCert Root CA embedded in the browser. If a user goes to a web site where the SSL certificate is chained to the ValiCert Root CA, IE will automatically install without user intervention the root as part of the MS root update process.

 
Bottom of this kb entry has info on MS root update:

http://support.microsoft.com/kb/931125