Getting "Session not authenticated" while calling createUser function

Hi,

We get successfully connected and authenticated to VMware ESXi machine using the webservices.

But when we try to do some more operations like 'createUser()' it gives us error saying "Session is not authenticated".

Currently the SESSION_MAINTAIN_PROPERTY is set to false in our code.

If we set this to true then we get an error saying "Maintain Session is enabled but none of the session properties(cookies, Over-Written URL) are returned. Also in this case connection is not established so we set it to false.

Can somebody help us here?