To prevent spying on remote console sessions, limit the number of remote console connections that are allowed.

By default, more than one user can connect to a virtual machine remote console session at a time. If more than one user connects to a remote console, the users can observe the operations performed by other remote console users. For example, if a virtual machine administrator logs in to the virtual machine using the remote console, a user without administrator privileges can simultaneously connect to the virtual machine console and observe the administrator's actions.

Turn off the virtual machine.


Find the virtual machine in the vSphere Web Client inventory.


To find a virtual machine, select a datacenter, folder, cluster, resource pool, or host.


Click the Related Objects tab and click Virtual Machines.


Right-click the virtual machine and click Edit Settings.


Select VM Options.


Click Advanced and click Edit Configuration.


Add or edit the parameter RemoteDisplay.maxConnections and set the value to 1.


Click OK.

Only one remote console connection to the virtual machine is permitted. Other attempts to start a remote console are rejected until the first session disconnects.