Setup for Enabling Azure Multimedia Redirection for Voice Calls
Updated
For multimedia redirection to work correctly, the following configuration steps must be completed. These steps are related to the Azure environment, the Sprinklr platform, and network-level configuration.
This article outlines how to enable and verify Azure Multimedia Redirection within Sprinklr’s contact-center platform.
Products Supported
Azure Virtual Desktop
Windows 365
Microsoft Dev Box
Follow the steps in the order listed.
Azure Environment Configuration (For Azure Implementation Teams)
Note: In this article, virtual desktop refers to:
Azure Virtual Desktop: session hosts in a host pool
Windows 365: Cloud PCs
Microsoft Dev Box: Dev Box instances
1. Prerequisites
Before you enable multimedia redirection, ensure that your environment meets the following requirements.
On the virtual desktop
You must have:
Local administrator privileges to install and update the Remote Desktop Multimedia Redirection Service.
The latest version of Microsoft Edge or Google Chrome installed.
Microsoft Visual C++ Redistributable 2015–2022, version 14.32.31332.0 or later installed on both:
the virtual desktop
the agent’s local Windows device
(Download available from Microsoft’s official Redistributable page.)
If using Microsoft Intune
You need:
A Microsoft Entra ID account with the Policy and Profile Manager built‑in role.
A device group containing the machines you want to configure.
If using Group Policy
You need:
A domain account with permission to create or edit Group Policy Objects.
A security group or organizational unit (OU) that includes the targeted devices.
Supported client applications
Agents must connect to the virtual desktop using one of the following apps:
Windows App for Windows, version 2.0.297.0 or later
Remote Desktop app for Windows, version 1.2.5709 or later
The agent’s local device must also meet standard Windows hardware requirements for real‑time communication apps.
2. Install Multimedia Redirection on Virtual Desktops
You need to install:
Remote Desktop Multimedia Redirection Service
Browser extension for Microsoft Edge or Google Chrome
Both components are included in a single .msi installer
Installation steps
Download the Azure Multimedia Redirection installer.
Close all browser windows, and confirm in Task Manager that no msedge.exe or chrome.exe processes are running.
Install the .msi file using one of the following methods:
Manual installation
Run the downloaded installer.
Follow the setup wizard.
Select Finish when the installation completes.
Silent installation (Intune or enterprise deployment tools)
Use the following command with Intune or your enterprise deployment tool as an administrator from Command Prompt.
msiexec /i <path to the MSI file> /qn
Note: After you install Multimedia Redirection service, ensure the browser extension is enabled.
Version Management
The Remote Desktop Multimedia Redirection Service does not update automatically.
Install new versions manually when available.
The installer automatically replaces the previous version.
The browser extension updates automatically.
For information about the latest version, see What's new in multimedia redirection.
Extension Management and Configuration
By default, users are prompted to enable the extension the first time they open their browser.
For centralized management, use Microsoft’s recommended methods for managing browser extensions. To configure settings specific to call redirection, refer to Microsoft’s list of common policy parameters.
Network Requirements for Enabling Multimedia Redirection (For Network Implementation Teams)
To support multimedia redirection, the agent’s local machine must have access to all WebRTC traffic, including:
STUN servers
TURN servers
Provider media servers
If you need fallback behavior or want call handling to continue when redirection is unavailable, allow the same connectivity from the virtual desktop as well.

Common issue
After multimedia redirection is enabled, WebRTC traffic originates from the local machine, not the virtual desktop. If the local network blocks STUN, TURN, or media endpoints, agents may experience call connection issues.
Additional notes
If you previously used Sprinklr inside a VDI without redirection, ensure that all WebRTC firewall rules now apply to the local network.
Signaling traffic to Sprinklr continues to originate from the virtual desktop—no changes required.
Only media traffic transitions to the agent’s local device.
Verify the Setup
Use the following checks to confirm that multimedia redirection is active.
1. Check the Multimedia Redirection Extension
With Sprinklr open:
Select the Microsoft Multimedia Redirection extension icon in the browser toolbar.
The icon displays a blue border and shows “The extension is loaded.”
Call Redirection displays a green check mark.

2. Verify During a Call
Start a call in Sprinklr and confirm that the extension icon indicates active multimedia redirection.
3. Verify Using Wireshark
On the local machine, confirm that RTP (Real-time Transport Protocol) audio packets flow directly between:
the agent’s local device
the provider’s media servers
Traffic should not pass through the virtual desktop.
4. Check WebRTC Internals
In the browser’s webrtc-internals page during a call:
No peer connections should appear between Sprinklr’s domain and media servers.
Only local-device peer connections should be visible if offloading is working correctly