How to Fix Teams Room audio/video dropped
Error message
Audio/video disconnected from a Microsoft Teams Room mid-meeting.
If you're seeing "Teams Room audio/video dropped", you're not alone. Here's what it means, why it happens, and the steps to resolve it.
What this error means
The Teams Room device lost its real-time media stream to the meeting, even though the room may still appear signed in.
Why this happens
Most often this is a network problem on the room's path: bandwidth saturation, packet loss, blocked UDP ports, VPN/SD-WAN interference, or a flaky USB peripheral. It can also be caused by a Teams Rooms app crash or a peripheral firmware issue.
Step-by-step fix
Reproduce by joining a test meeting from the room console and run the Teams Rooms diagnostics.
Confirm UDP 3478–3481 outbound to Microsoft 365 endpoints is open and not being SSL-inspected.
Check for packet loss with a quick continuous ping to a Microsoft endpoint from the room.
commandping -t world.tr.teams.microsoft.comRestart the Teams Rooms app/console, then reseat USB peripherals (camera, speaker bar) one at a time.
Update the Teams Rooms app and peripheral firmware to the current supported versions.
Affected products
Microsoft Teams
Still broken? Try these
- Pull the Call Quality Dashboard report for the affected meeting and look at jitter, RTT, and packet loss.
- Move the room temporarily off any VPN/SD-WAN tunnel to test direct internet egress.
- Open a service ticket and include CQD data, room serial number, and timestamps.
Related errors
Frequently asked questions
What does "Teams Room audio/video dropped" mean?
The Teams Room device lost its real-time media stream to the meeting, even though the room may still appear signed in.
What causes "Teams Room audio/video dropped"?
Most often this is a network problem on the room's path: bandwidth saturation, packet loss, blocked UDP ports, VPN/SD-WAN interference, or a flaky USB peripheral. It can also be caused by a Teams Rooms app crash or a peripheral firmware issue.
How do I fix "Teams Room audio/video dropped"?
1. Reproduce by joining a test meeting from the room console and run the Teams Rooms diagnostics. 2. Confirm UDP 3478–3481 outbound to Microsoft 365 endpoints is open and not being SSL-inspected. 3. Check for packet loss with a quick continuous ping to a Microsoft endpoint from the room. 4. Restart the Teams Rooms app/console, then reseat USB peripherals (camera, speaker bar) one at a time. 5. Update the Teams Rooms app and peripheral firmware to the current supported versions. Always test changes in a non-production environment first.
Browse more errors in Microsoft Teams: Fix Microsoft Teams errors. Desktop app loading issues, Teams Rooms audio/video drops, federation, and meeting access problems. Or paste your own error into the error decoder tool to find a match. You can also go back to the homepage to browse common errors by topic.