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April 9, 2026

System Requirements for Windows Media MMR

To support Windows Media Multimedia Redirection (MMR), your Horizon deployment must meet certain software and hardware requirements.

  • Remote desktop

    • This feature is supported on virtual desktops and RDS hosts for published desktops.
    • The following guest operating systems are supported.
      • 64-bit Windows 10. Windows Media Player is supported. The default player TV & Movies is not supported.
      • Windows Server 2012 R2 configured as an RDS host
    • 3D Rendering can be activated or deactivated on the desktop pool.
    • Users must play videos on Windows Media Player 12 or later or in Internet Explorer 8 or later.
  • Omnissa Horizon Client software

    Horizon Client for Windows.

  • Horizon Client computer or client access device

    The clients must run a 64-bit or 32-bit Windows 10 operating system.

  • Supported media formats

    Media formats that Windows Media Player supports, for example: M4V; MOV; MP4; WMP; MPEG-4 Part 2; WMV 7, 8, and 9; WMA; AVI; ACE; MP3; WAV.

    MP3 is not supported when using MMS and RTSP.

    Note: DRM-protected content is not redirected through Windows Media MMR.

  • Horizon policies

    In the console, set the Multimedia redirection (MMR) policy to Allow. The default value is Deny.

  • Back-end firewall

    If your Horizon deployment includes a back-end firewall, verify that the firewall allows traffic to port 9427 on your desktops.

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