If you have to select a certain certificate for authentication for example, you may wonder why several certificates are presented by the UI. Internet Explorer may offer several client authentication certificates while securely connecting to a web site...

I just want you make aware of an important Microsoft knowledge base article that explains the interoperability between a Windows Server 2003 web enrollment station a Windows Vista computers. http://support.microsoft.com/kb/922706/en-us has all the details...

In some cases, you might want to download the most current CA certificate from a web enrollment station. Use the following URL to do so: http://www.contoso.com/certsrv/certnew.p7b?ReqID=CACert&Renewal=-1&Enc=b64 Replace www.contoso...

The other day I was asked how many subject alternate names will fit into a single certificate. I asked myself what the best way would be to find out. After a short time of thinking I decided to look at the schema defintion of the CA database. The schema...