May 2026 Status – HDMI & Miracast Screen Share

Hi, there has been a useful update since this question was posted. Microsoft’s Teams Rooms release notes state that version 5.6.135.0, released on May 27, 2026, added Miracast support to all-in-one touchboards. I would check the Teams Rooms application version on the Surface Hub 3 first, install all available Teams Rooms and Windows updates through your normal management process, and then perform a full restart. Microsoft describes Miracast as another content-ingest source alongside HDMI, so both should be available once the device is on a supported build and the relevant network requirements are met. If the device is already updated but the option is missing, check whether device policies are restricting wireless projection and review the Teams Rooms logs. The AutoScreenShare setting only affects whether ingested content is shared automatically with remote meeting participants; it does not enable or disable the physical HDMI or Miracast source itself.