Not able to connect when loopback address is 127.0.0.1

[hopd]

When I try to connect from vSphere client, I see the below error.

vSphere Client couldnot connect to "myMachine" An unknown connection error occured. (The request failed because of a connection failure. (Unable to connect to the remote server))

But, when the loopback address is anything else - say 127.0.0.4, it works perfectly fine. I am connecting from Windows server 2003.

127.0.0.1 localhost is the only entry in my host file. Even if i change it any of the below, the same problem persists

127.0.0.1 localhost myMachineName

                    or

127.0.0.1 myMachineName

Any help will be greatly appreciated

[AndreTheGiant]

Have you set a hostname on your host?

[hopd]

Sorry. I didn't get you completely.

Is host name same as computer name? If so, yes it is set

[AndreTheGiant]

I mean the name of the ESXi host.

Usually is localhost and is not good, because it could be resolved as a 127.0.0.1

You cannot connect with this address (and you have to remove from your host files the references).