Hi Siva,
Well this is somehow good an bad news. If there is no workaround you will have to use VDDK 5.1 for vSphere 5.1 and VDDK 5.0 U2 for vSphere 5.0 and smaller until the release of VDDK 5.1 U1 - not that cool ...
I took a quick look at the VDDK 5.1 docs and there is content which reflects SSL security hardening and also talks about SSL thumbprints. As I understand it we should be able to configure the SSL security checking via Registry Keys on Windows and via the VixDiskLib config file on Linux. Here are the links I have spotted:
- SSL Certificates and Security - basic explanation of Windows and Linux config options
- vixDiskLib.linuxSSL.verifyCertificates - switch in VDDK config file passed to VixDiskLib_InitEx(...)
- SSL Certificate Thumbprints - make sure to check the VDDK 5.1 sample program for cmd line switch -thumb
Maybe you can make VDDK 5.1 ignore the missing SSL thumbprint as a workaround.
In short: as you are running on Windows try to switch of SSL verification via the Registry Keys as laied out in the doc links above.
Please keep me posted on this issue and thanks for awarding points :-)))