What must you install on each session host to enable calling and meeting functionality for Microsoft Teams?

To enable calling and meeting functionality for Microsoft Teams on Azure Virtual Desktop session hosts, installing the Remote Desktop WebRTC Redirector Service is essential. This service facilitates the necessary WebRTC protocols that allow real-time communication features in Microsoft Teams to function properly within a virtualized environment.

By integrating the WebRTC Redirector Service, your session hosts can efficiently manage audio and video streams, ensuring a high-quality experience when users engage in Teams meetings or calls. Moreover, this installation helps in optimizing network traffic and reducing latency, which is critical for the performance of audio and video communications in a remote setting.

Other options, while they relate to performance and configuration, do not address the fundamental requirement for enabling Teams' calling and meeting capabilities. For instance, GPU-accelerated frame encoding can enhance performance but is not a requisite installation for functional communication capabilities. Disabling GPU hardware acceleration might hinder performance rather than improve it, and a multimedia redirection extension, although useful for some scenarios, does not provide the necessary integration with WebRTC for Teams functionality. The Remote Desktop WebRTC Redirector Service specifically ensures that Teams can utilize the required protocols for effective communication in Azure Virtual Desktop environments.