Hi,
I tried a workaround and it worked for me. For the problem described above, I thought there may be compatibility problem. As I stated earlier, I am using !Windows 10, so I thought there may be compatibility issue of !VMware vSphere Client with !Windows 10. So I tried to run the client in Compatibility mode, and it worked!
So if you find this problem in similar situation, try running the client in compatibility mode. That might solve your problem.
Thanks,
S. Zahir