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RDP Multipath for Azure Virtual Desktop: Enhanced Connection Reliability

Microsoft's RDP Multipath for Azure Virtual Desktop addresses persistent connection reliability issues by using multiple network paths and intelligent switching.

Jacob Williams
5 min read
Azure Virtual Desktop
RDP Multipath
Network Reliability
PowerShell

Microsoft's just rolled out RDP Multipath for Azure Virtual Desktop, and it's addressing one of those persistent pain points we've all experienced: unreliable remote connections during critical work moments.

What is RDP Multipath?

RDP Multipath improves session stability by continuously monitoring multiple network paths and dynamically selecting the most reliable one. Instead of relying on a single connection, it establishes multiple parallel UDP connections and intelligently switches between them when network conditions change or degrade.

The technology uses Interactive Connectivity Establishment (ICE) to create redundant connections through STUN and TURN protocols, ensuring your Azure Virtual Desktop sessions remain stable even in challenging network environments.

RDP Multipath network architecture showing UDP connections via STUN and TURN servers

RDP Multipath architecture with multiple UDP paths via STUN and TURN servers

Why Should You Care?

Enhanced Reliability

Even in environments with fluctuating network quality, users can expect a more stable and productive experience. This means fewer dropped connections, reduced session interruptions, and improved user satisfaction.

Zero Configuration Required

RDP Multipath works automatically. You don't need to make changes to existing infrastructure, making it a genuine enhancement rather than another deployment project.

Business Impact

Reduced support tickets, improved productivity, and better user experience for remote and hybrid workers.

How to Enable RDP Multipath in Validation Environments

RDP Multipath is currently being rolled out in phases and is now Generally Available (GA). To test it in your validation environment:

Prerequisites:

  • Your host pool must be set as a validation environment
  • Ensure that RDP Shortpath is configured as the primary transport protocol

Manual Enablement (Optional):

If you want to enable RDP Multipath ahead of the full rollout:

reg add "HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RdpCloudStackSettings" /v SmilesV3ActivationThreshold /t REG_DWORD /d 100 /f

Verification:

  • Users can check the connection status of a remote session from the connection bar, which shows RDP Multipath is enabled
  • Azure Virtual Desktop administrators can view connection reliability information in Azure Virtual Desktop Insights
Remote Desktop connection dialog showing Multipath UDP/WebSocket enabled status

Connection status showing RDP Multipath enabled

Get Started Today

Start testing RDP Multipath in your validation environments today to experience the enhanced connectivity before the full production rollout completes.


JW

Jacob Williams

Azure Cloud Engineer & AVD Specialist at Phoenix Software Limited. Microsoft certified Solutions Architect Expert.