IT Error Decoder
Microsoft Teams

How to Fix Teams Room video drops during meeting

Last reviewed

Error message

Video from a Microsoft Teams Room cuts out partway through a meeting; remote participants see a frozen or black tile.

Video drops are almost always a network or peripheral-thermal issue, not a Teams software bug. The Call Quality Dashboard can confirm which.

What this error means

The video stream from the Teams Room device stopped flowing mid-call, even though audio and signaling may still work.

Why this happens

Most often: network bandwidth saturation, packet loss spikes, an SD-WAN/VPN reconvergence, or a thermal-throttled USB camera firmware issue.

Quick fix (for end users)

  • Restart the room hardware and rejoin the meeting.
  • Try a different meeting from the same room to see if the problem repeats.

Admin / engineer fix

  • Open Call Quality Dashboard for the affected meeting. Look at video send-side metrics for jitter, packet loss, and round-trip time.

  • Check whether the room's network path goes through a VPN or SSL-inspecting proxy. Microsoft 365 endpoints should be excluded from inspection.

  • Confirm UDP 3478–3481 outbound is open to Microsoft 365 endpoints.

  • Check the camera and compute module for thermal warnings. A hot Logitech Rally Bar will silently downshift video.

Step-by-step fix

  1. Reproduce the drop, noting the timestamp.

  2. Check CQD for that meeting.

  3. Address the dominant problem (network or thermal).

Affected products

Microsoft Teams Rooms

Common variations of this error

People also see these phrasings of the same problem:

  • Video freezes in Teams Rooms
  • Teams Rooms video keeps dropping

Still broken? Try these

  • Compare two rooms side-by-side joining the same meeting from different network paths.
  • Open a Microsoft case with CQD data if you can't reproduce on another room.
  • Check Microsoft 365 Service Health for any active Teams advisories.

Related errors

Related searches

  • teams rooms video freezing
  • teams rooms call quality

Frequently asked questions

Does upgrading my internet help?

Sometimes. But video drops on adequate links usually point to packet loss or path issues, not raw bandwidth. Check loss before adding more bandwidth.

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.