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Duo (1 PC, multiple users)

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Duo (1 PC, multiple users)
DESCRIPTION

What is Duo?

Duo is an HDR-compatible, headless, bare-metal, multi-seat streaming server based around TermWrap, Sunshine, Moonlight and a variety of custom drivers & libraries.

You can think of it as a version of Sunshine that allows multiple users to use the same computer at the same time without occupying the computer's physical session or otherwise interfering with each other.

Each session's resolution, refresh rate, scaling and dynamic range are controlled directly via Moonlight.

The typical "1 PC, multiple users" scenario that we all know and love.

Let it empower your handheld device

You own a handheld device that can't handle the latest games, but still want to play them?

Start a Duo instance on your gaming computer, connect to it, and play that game, all while still being able to use your computer normally.

Share your gaming hardware with friends or family

Your friend / family member doesn't own a decent enough computer but you do?

Start a Duo instance on your gaming computer, let them connect to it, and play that fancy multiplayer game together that they just can't run right.

Host your own cloud gaming server

Enable UPnP on your router, toggle the according setting in your instance's admin panel and your computer is now reachable anywhere in the world.

Setup Guide

A step-by-step guide on how to get started with Duo.

Troubleshooting

A list of frequently asked-about issues and how to resolve them.

Known Issues

A list of known issues that we really can't do all too much about due to technical limitations.

Changelog

Version 1.5.2

  • Fixed a sandbox start issue

  • Fixed a ViGEmBus sandbox installation error

  • Removed unnecessary ViGEmBus architectures

  • Fixed a cloudflare related navigation error

Version 1.5.1

  • Added Steam multiboxing support (shortcut updates might be required, see assets/apps.json for reference)

  • Reduced idle CPU & GPU usage

  • Improved HID isolation support

  • Disabled Windows' ControllerToVKMapping because it ignores the DEVPKEY_Device_SessionId attribute, breaking HID isolation in the process

  • Modernized the graphical user interface

  • Merged GitHub & Patreon builds into a single binary

  • HDR display parameters are now configured automatically

  • Fixed a service start issue

  • Fixed a sandbox start issue

  • Fixed a sandbox stop race condition that caused RTSP errors on subsequent instance starts

  • Fixed a screen tearing issue caused by the display driver

  • Fixed a framebuffer mix-up between sessions that occured when a newly spawned session received an out-of-order session ID

  • Fixed an issue with host-connected Bluetooth devices

  • Fixed an issue with passwords containing special symbols

  • Fixed a user authentication issue that prevented instance starts

  • Fixed the ms-gamebar error message in sandboxed instances

  • Fixed an issue that caused the setup window to slip behind other open windows

  • Epic Games installed in non-standard directories now get passed through into the Sandbox (but without their install manifest)

  • Updated Sunshine

Version 1.5.0

  • Added sandbox support for Windows 11 24H2+

  • Added experimental support for persistent sandbox storage

  • Failed sandbox starts are now logged properly

  • Host HID isolation can now be toggled on or off (default on)

  • The scale factor settings can now be set to a static value (ranging from 100~500%)

  • The scale factor is now properly applied to sandboxed instances

  • The host's Visual C++ and DirectX runtimes are now accessible inside the sandox

  • The host's Steam installation is now accessible inside the sandbox

  • The host's Epic Games installation is now accessible inside the sandbox

  • Fixed a bug in the setup that broke the Windows 11 24H2 component store

  • Updated Sunshine

Version 1.4.9

  • Fixed a timing issue that caused applications to use the wrong display resolution

  • Fixed a field enable issue in the manager application

  • Removed the multiple instance warning from the manager application

  • Account passwords no longer expire

  • Added experimental sandbox support for supporters (Windows 11 23H2+ only, see Wiki for details)

  • Updated Sunshine

Version 1.4.8

  • Improved gamepad jailing support

Version 1.4.7

  • Added Windows 11 24H2 support

  • Updated Visual C++ runtime components

  • Enabled RDP-Tcp listeners in Core OS containers

Version 1.4.6

  • Added support for Memory Integrity

  • Optimized instance startup times

  • Replaced RdpWrap with TermWrap

  • Updated Sunshine

Version 1.4.5

  • Added support for Windows Core OS containers

  • Added support for non-administrative Users on Windows Home

  • The Auto Start setting can now be changed while the service is running

  • Updated RdpWrap

Version 1.4.4

  • Instances now pause whenever the host suspends

  • Updated the AV exclusion list to improve hooking speed

  • Updated the bundled RdpWrap.dll & RdpWrap.ini

Version 1.4.3

  • Improved the RdpWrap.ini updater

  • Updated built-in RdpWrap.ini

Version 1.4.2

  • The scale factor adjustment range has been changed to 50~200%

Version 1.4.1

  • Fixed a memory leak in Duo.exe

Version 1.4.0

  • Fixed a hook timing issue

  • Fixed a bug in the termsrv.dll version reader

  • Disabled some no-longer-needed debug messages

  • Updated built-in RdpWrap.ini

Version 1.3.9

  • Updated Sunshine (fixes pairing issue)

  • Updated built-in RdpWrap.ini (adds support for Windows 11 10.0.22621.2080)

Version 1.3.8

  • Inlined RdpWrap

  • Inlined aardwolf

  • Inlined TaskScheduler

  • RdpWrap.ini updates are now automated

  • Instances can now recover from adapter errors

  • Instances can now be started & stopped on-demand via a WebUI

  • Removed no-longer-needed python dependency

  • Reduced service & session startup time

  • Updated Duo Manager

  • Updated Sunshine

Version 1.3.7

  • Improved capture performance

  • Fixed an issue that corrupted instance setting files after web admin panel configuration changes

Version 1.3.6

  • The UI scale factor can now be adjusted with a multiplier (0.13888 * height * multiplier)

  • Removed unneeded python components

Version 1.3.5

  • Memory integrity is now disabled (to ensure RdpIdd.dll & IddCx.dll can be patched properly)

Version 1.3.4

  • Updated Sunshine

  • Duo's unlock status is now visible in the title bar (as a + symbol in the version number)

  • Duo's revision number has been removed from the title bar

  • The web admin panel button now doubles as an online indicator

Version 1.3.3

  • Duo can now spawn multiple instances of Steam out-of-the-box (see assets\apps.json)

Version 1.3.2

  • Added support for Windows 10 21H2

  • Network Level Authentication is now force-enabled

  • Render adapters are now chosen based on their available dedicated video memory

  • Instances linked to expired user passwords will now be skipped

  • Left-over python processes are now being detected & garbage-collected

Version 1.3.1

  • Added support for Windows 10 22H2

  • Scale factors are now notched to 25% increments

  • Improved the display configuration change response time

  • Improved the instance start time

  • Fixed a rare black screen error

  • Fixed a session join error

  • Fixed a session stop error

Version 1.3.0

  • Fixed an issue with UI scaling at sub-720p resolutions

Version 1.2.9

  • Fixed a gamepad isolation issue

  • Resolution, refresh rate, scaling and HDR can now be controlled via Moonlight

  • The version number is now visible in Duo Manager

Version 1.2.8

  • Improved gamepad isolation

  • Removed no-longer-needed libraries

  • Passwords are now hidden

  • Instances can now be disabled

  • Each instance has its own application list now

Version 1.2.7

  • Fixed several input issues

Version 1.2.6

  • Improved capture performance

Version 1.2.5

  • Fixed the XBOX360 gamepad mode

  • Fixed a screen tearing issue

Version 1.2.4

  • Optimized frame capture performance

  • Reworked gamepad isolation algorithm

Version 1.2.3

  • Fixed a framedrop issue

  • Fixed a desktop render glitch

  • Fixed a gamepad isolation bug

Version 1.2.2

  • Optimized the framebuffer capture code

  • Optimized the service start code

Version 1.2.1

  • Implemented PnP device redirection (deprecating HIDHide)

  • Implemented a physical HID device watchdog

  • Moved WTS API calls into their own subprocesses (to work around a known API issue)

  • Fixed several instance start errors

Version 1.2.0

  • Added HDR support

  • Updated Sunshine

  • Fixed two instance start deadlocks

  • Fixed custom scale factors (again)

  • Rewrote RdpIdd.dll & IddCx.dll patches so that Windows Update can't break them anymore

Version 1.1.1

  • Fixed a service shutdown deadlock

  • Fixed a desktop scaling issue

  • Fixed animated mouse cursors

  • Fixed monochrome mouse cursors

  • Fixed mouse cursor scaling

  • Optimized mouse cursor blending

  • Increased the default log verbosity

  • Raised minimum system requirements to Windows 11 23H2 (in preparation for HDR support)

Version 1.1.0

  • HidHide segregation code is now more resilient

  • Physical devices now get jailed to the active WTS console session on Sunshine ViGEmBus callback invocation

  • Virtual DS4 gamepads now get jailed properly

Version 1.0.9

  • Automatically enables HidHide cloaking when required now

Version 1.0.8

  • Updated Sunshine

  • Removed sunshinesvc.exe (Duo doesn't need it)

  • Gamepad segregation is now provided via ViGEmBus & HidHide (no longer experimental)

Version 1.0.7

  • Removed version update message (as Duo isn't compatible with upstream Sunshine)

  • Sunshine applications now launch in the right user session

  • I had to re-upload this one because Windows Defender ate a file (please re-download & re-install if your Duo service refuses to start)

Version 1.0.6

  • Fixed an issue with spaces in usernames

Version 1.0.5

  • Fixed an issue that affected Windows 11 Home Edition

Version 1.0.4

  • Fixed desktop scaling (after KB5030310 broke it)

Version 1.0.3

  • Fixed the software encoder's video format settings

  • Removed the DXGI test code as its no longer needed

Version 1.0.2

  • Added support for Microsoft's new IddCx20 API

Version 1.0.1

  • Added support for KB5030310 (23H2 Preview)

Version 1.0.0

  • Initial release

Downloads

blackseraph PATREON 0 favs
VIEWS1
FILES46 files
POSTEDOct 3, 2023
ARCHIVEDJun 10, 2026