Hi,
We are Using Windows 2003 as Sub-CA and we are planning to migrate the same to new Windows 2008 Server. The Windows 2003 CA is using SHA1 as Hashing algorithm but in Windows 2008 I want to use SHA2 as hashing mechanism. I have tried to migrate the CA role to new Windows 2008 Server but after successful migration I can see that Windows 2008 CA is also using SHA 1 mechanism. Please let me know if there is a way to change that and whether there will be any issue with existing certificates.