Please excuse me for the delay in response.
Yes I did tried all the steps from the technote as you mentioned above but nothing seems to be working fine.
Tried with windows update as well, nothing is coming up with new updates.
I did opened a support case with IBM, even they have tested successfully on their lab 2012 R2 servers. And I did checked with our platform team, they have confirmed this driver is not supported on 2012 & 2012 R2 servers, the driver is available only on 2008 servers.
So completely blank at the moment as how I can proceed further to fix the problem. Do you think we should raise support ticket with Microsoft? Additionally do you think, Can we download the specific driver and install it manually on the server?
Please let me know your suggestions, Thanks.