The following URLs describe a new feature of Windows Certificate server is the ability to install multiple instances on the same server. (see end of "transcript" link it's a zip file)http://www.digitalsupporttech.com/mskb/896/896733_TechNet_Support_WebCast:_Best_Practices_for_Public_Key_Infrastructure:_Steps_to_build_an_offline_root_certification_authority_%28part_1_of_2%29.htm Quote: "Multiple Certificate Server instances on a single physical server" http://winintro.ru/certsvr.en/html/cf5622e1-daa9-42cc-8b43-14953e34f8b6.htm Quote: "Multiple instances of the Certificate Enrollment Web Service can be installed on a single computer in order to support multiple CAs." Question How can I actually implement multiple CA instances on a Windows 2008R2 server?

Please have this asked in security forum http://social.technet.microsoft.com/Forums/en-US/winserversecurity/threads Regards, _Prashant_MCSA|MCITP SA|Microsoft Exchange 2003 Blog - http://prashant1987.wordpress.com Disclaimer: This posting is provided AS-IS with no warranties/guarantees and confers no rights.

Please refer below link at the end of the page is your solution. http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_Server_2008/Q_24450343.html However if you require any further assistance you can refer certificate forum as prashant mentioned for better assistance. http://social.technet.microsoft.com/Forums/en-US/winserversecurity/threadsBest Regards, Sandesh Dubey. MCSE|MCSA:Messaging|MCTS|MCITP:Enterprise Adminitrator | My Blog Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Please refer below link at the end of the page is your solution. http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_Server_2008/Q_24450343.html However if you require any further assistance you can refer certificate forum as prashant mentioned for better assistance. http://social.technet.microsoft.com/Forums/en-US/winserversecurity/threadsBest Regards, Sandesh Dubey. MCSE|MCSA:Messaging|MCTS|MCITP:Enterprise Adminitrator | My Blog Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Windows DO NOT support multiple instances of Certification Authority (ADCS). All links you mentioned talks about Enrollment Web Service (a new functionality introduced in Windows Server 2008 R2) which is not a ADCS instance. Still, only one ADCS instance per server is supported.My weblog: http://en-us.sysadmins.lv PowerShell PKI Module: http://pspki.codeplex.com Windows PKI reference: on TechNet wiki