Digital Signature update Wef 01-01-2012 SHA2 Certificate Require WIN SP 3

Important notice on Digital Certificates( SHA2)

If in case you are using Digital Certificate issued post 1st January 2012 (SHA2 Certificate ),please ensure that you have Windows XP ( SP3 )/ Windows Vista/Windows 7 installed.

http://mca.gov.in/MCA21/digi_cirti-2012.html