Some time back I had an issue while I tried to connect my Vcenter from powercli but unable to connect and getting below error ################################################## Connect-VIServer : 6/08/2015 3:31:27 AM Connect-VIserver Could not connect using the requested protocol. At line:1 char:1 + Connect-VIServer itvc001.age.com + + CategoryInfo : ObjectNotFound: (:) [Connect-VIserver], ViServerConnectionException + FullyQualifiedErrorId : Client20_ConnectivityServiceImpl_Reconnect_ProtocolError, VMware.VimAutomation.ViCore.Cmd lets.Commands.ConnectVIServer ################################################## This is all because, there are proxy setting configured into your explorer or into your system from where you are trying to connect the vcenter from powercli. To resolve this Issue pls follow below KB articile. 2011395 http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=display
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