To remotely play a game installed on another PC on your network, you can use the "Moonlight" program (as a client) and the "GameStream" feature of "NVIDIA GeForce Experience" (as a server).
However, to access the remote PC, you will first need to enter a code on that remote PC.
To avoid having to physically return to the remote PC to enter the code, we will present you with a little tip and a problem that you may encounter when trying to use another technique.

1. Problem encountered
2. Install VNC server (TightVNC) on the remote PC
3. Install VNC client (TightVNC) on local PC
4. Connect to the remote PC via Moonlight (by validating the code via the VNC client)

1. Problem encountered

As said before, to play a game remotely, you can use the "GameStream" feature of NVIDIA GeForce Experience (configurable via the "SHIELD" section).

Note: if the "SHIELD" section of NVIDIA GeForce Experience is missing for you, it is because your system configuration or hardware is not supported.
To do this, check the system requirements displayed by NVIDIA GeForce Experience.

As you can see, in our case we have access to the desktop of this PC, as well as the game "Shadow Of The Tomb Raider" via the "GameStream" feature.

In the "Moonlight" program, you click on the name of the automatically detected remote PC.

Moonlight asks you to enter a specific code on the host (remote) PC.

On the remote PC, you see the NVIDIA GeForce Experience notification appear.

However, to avoid physically going to the remote PC, you may want to try accessing it via Windows Remote Desktop (RDP).

The Windows Remote Desktop Connection client asks you for the credentials of a user account on the remote PC.
You provide the correct credentials of your Windows user account on the remote PC.

And you see the remote PC screen.
However, you don't see any notifications at the bottom of the screen.

On the "Moonlight" client, you see the error "Pairing failed. Please try again." appear.
Click OK.

If you try to access the NVIDIA GeForce Experience "GameStream" feature settings via Remote Desktop Connection (RDP), you will see that the GameStream settings no longer appear in the "SHIELD" section.
Instead, you see this:

Plain Text

Informations indisponibles.
Astuces de dépannage.

If you look on the Internet, you will see that it is the Windows Remote Desktop Connection (RDP) that is causing problems with the NVIDIA GeForce Experience "GameStream" feature.
So, you need to use a third-party solution (such as "TightVNC", for example) as you will see in the rest of this tutorial.
Source : RDP breaks gamestreaming | NVIDIA GeForce Forums.

In fact, the problem with Windows Remote Desktop (RDP) is that the local session (= the screen visible on the physical PC) is locked when you create an RDP session (via the Windows "Remote Desktop Connection" client).
However, if you use a third-party solution (based on the VNC protocol, for example, but TeamViewer would work too), a mirror system will be used for the screen.
The screen of the remote PC is therefore simultaneously visible on the physical screen of the remote PC, as well as in the VNC client used. This solves the problem.
However, remember to close the VNC client (or other) before launching the game via Moonlight to take full advantage of the graphics offered by Moonlight.

2. Install VNC server (TightVNC) on the remote PC

On the remote PC where you have enabled the "GameStream" feature in NVIDIA GeForce Experience, download the "TightVNC" software (which is free) and run the downloaded installer.
Note that the installer is available for both common architectures: 32-bit and more commonly 64-bit.

For more information about the installation, refer to our tutorial: Control a PC remotely via VNC protocol.

In the TightVNC installer, choose the "Custom" installation type.

Install only the VNC server: TightVNC Server.

To do this, click on the icon to the left of "TightVNC Server" and click on "Entire feature will be installed on local hard drive" (as in the image below).
For the client (TightVNC Viewer), choose "Entire feature will be unavailable".

Leave the "Register TightVNC Server as a system service (recommended)" box checked.
This way, the VNC server will start when Windows starts without you having to log in to that PC first.

Preferably, specify a password for Remote Access from the VNC client (which you will install later), as well as for access to the administration of this VNC server.

An icon with a "V" will appear in the taskbar.
This means that the TightVNC server is installed on this remote PC.

Restart your computer to fix the problem that occurred earlier with the "GameStream" feature.

Once the PC has restarted, open the "NVIDIA GeForce Experience" program on this remote PC.

As expected, the "GameStream" feature is working again.