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Setup Guide

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Black-Seraph edited this page Jul 7, 2025 · 33 revisions

Minimum Host PC requirements

  • Windows 10 21H2

Recommended Host PC requirements

  • Windows 11 23H2+

Immediate display configuration, HDR and Sandbox support (Patreon-only) are only available on Windows 11 23H2+!

Quick Setup Instructions

  1. Download Duo, either from GitHub or Patreon.
  2. Should your browser give you a warning message, choose to Keep the file anyway.
  3. Execute the downloaded file and follow the on-screen-instructions to finish installing it.

Explorer screenshot

  1. Open the start menu, search for Duo Manager and execute it.

Start Menu screenshot

  1. Optional: Click on Unlock Patreon Benefits and follow the on-screen-instructions to unlock your Patreon benefits if you haven't done so yet.

Unlock Benefits Button screenshot

  1. Create your first instance.
  2. To make the initial set-up easier, toggle the instance's Auto Start setting.

Start with service toggle screenshot

  1. Click on the Start button in the left pane to start Duo.

Start Button screenshot

  1. Navigate to your instance via the left pane.

Instance Navigation Button screenshot

  1. Wait for the Pair New Client button to light up, and click on it.

Pair New Client Button screenshot

  1. Follow the on-screen-instructions to pair your Moonlight client.

Pair Instructions screenshot

At this point, your client is paired to your new instance, and you're ready to play games.

If you're new to using Moonlight, now might be a good time to check their Wiki as well.

Creating instances

  1. Open the start menu, search for Duo Manager and execute it if you haven't already.

Start Menu screenshot

  1. Click on the New button in the left pane and follow the on-screen-instructions to create a new instance.

New Instance Button screenshot

  1. Choose a local user account from the User Name list.

User Name List screenshot

  1. Enter the chosen user's password into the Password text box.

Password Box screenshot

  1. Optional: Adjust other instance parameters as needed.

Instance Settings screenshot

Sandboxing instances

If you've enabled Patreon benefits on Windows 11 version 23H2 or later, you'll notice a new instance setting called Run in Sandbox.

Run in Sandbox toggle screenshot

Enabling this option will fully isolate the instance from your host system by running it within the Windows Sandbox.

This feature is particularly useful for dual-boxing certain games, enhancing gamepad isolation, or granting less tech-savvy friends access to a gaming environment without the risk of them inadvertently affecting your host system.

Adjusting the amount of assigned RAM

The Assigned RAM can be changed to any value between 10% and 100% (memory overcommitment) under Settings.

Assigned RAM slider screenshot

Sharing folders

Additional folders can be shared with the Sandbox by clicking on the Manage Shared Folders button under Settings.

Manage Shared Folders Button screenshot

Using the Duo WebUI to start or stop instances

By default Duo's WebUI listens on port 38299, but this port can be changed under Settings.

It is suggested to bookmark the WebUI link on a companion device of choice for easy remote starting & stopping of instances.

WebUI screenshot

Setting up HDR on the Steam Deck OLED

HDR is only available on Windows 11 23H2 or newer, with enabled Patreon benefits!

  1. Ensure you've worked your way through the Quick Setup Instructions.
  2. Install the latest Moonlight Flatpak on your Steam Deck OLED.
  3. Add Moonlight as a non-Steam game on your Steam Deck OLED.
  4. Start Moonlight on your Steam Deck OLED in game mode, enable HDR in the settings, and pair it to your Duo instance.

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