For some reason my VMware vSphere is no longer working. I have to installed again but I'm getting the following message. If I either run the installer or save the installer I get the same results.
Please don't mind me asking, but is the ESXi host you are trying to connect to also running version 5.5?
The "Updating" window usually pops up if the client detects another version.
André
PS: If you need another client version/build, see https://kb.vmware.com/s/article/2089791 for direct download links.
As per screen shot you have vSphere client 5.0 and try to connect vSphere server 5.5 . if yes than you need to install vSphere client 5.5 on windows machine .
you can down load from below link....
Regards,
Randhir