Can anyone share some thoughts on this? I know others have had this problem but I can't find a resolution.
I am having the same problem with vSphere Client 5.5..
can anyone help us?
It is time to get into the logs and find out what is occurring, please see the below links would should give you enough to start and hopefully resolve your issue.
I do have a question, are you using the vCenter server appliance or did you do a manual / simple installation?
We have seen this problem on windows 7 machines sometimes, I guess it would be working on some other windows 7 machines, and hence this is something specific to your machine. I guess you have tried most of the stuff, but let me check if we can find anything else on this.