If you drag a corner of the remote desktop window to resize it, a tooltip shows the screen resolution in the lower-right corner of the window.
If you are using the VMware Blast display protocol or the PCoIP display protocol, the tooltip changes to show different screen resolutions when you change the size of the remote desktop window. This information is useful if you must resize the remote desktop window to a specific resolution.
If a Horizon administrator has locked the guest size, or if you are using the RDP display protocol, you cannot change the resolution of the remote desktop window. In these cases, the resolution tooltip shows the initial resolution.
If you have multiple monitors, you can select the monitors on which to display a remote desktop window. For more information, see Select Specific Monitors to Display a Remote Desktop. You can also configure the remote desktop window to open on a single monitor. For more information, see Display a Remote Desktop on a Single Monitor in a Multiple-Monitor Setup.