VMware vSphere Client – Error: Call “ServiceInstance.RetrieveContent” for object “ServiceInstance” on Server failed

I was receiving the error below: The request failed because of a connection failure. (Unable to connect to the remote server)

Call “ServiceInstance.RetrieveContent” for object “ServiceInstance” on Server failed

Despite having followed the instructions for this error I was still unable to connect. I solved this problem by uninstalling Widecap, an alternative that I was trying to replace Proxifier