Teams meeting problems split between hardware, bandwidth, and the Teams client itself. Symptoms tell you which.

"I'm choppy / breaking up"

This is upload bandwidth almost always. Open another tab and run speedtest.net — look at Upload.

Teams needs:

  • Audio only: 30 Kbps up
  • Video call: 1.5 Mbps up minimum, 4 Mbps for HD

If upload is below 2 Mbps, your bandwidth isn't enough. Causes:

  • OneDrive uploading a big file
  • Phone tethering (low ceiling)
  • Far from the Wi-Fi AP

"Others are choppy / robotic"

That's their upload, not yours. Suggest they check theirs. Or both of you have a degraded link in the middle (your ISP or theirs).

"Echo on the call"

Someone in the meeting has their speakers turned up and their mic open — your voice goes out their speakers, back into their mic, and to you delayed.

If it's you echoing:

  • Use a headset
  • Or lower your speaker volume
  • Don't sit too close to the laptop mic

"Can't hear anyone"

  1. Check the speaker icon at the bottom of the Teams meeting — is it muted on Teams' end?
  2. Check the system volume in the system tray
  3. Check the output device — Teams Settings → Devices → Speaker — is it set to the right output?
  4. Plug headphones in; if you hear there, your laptop speakers are muted or broken

"They can't hear me"

  1. Check Teams mute (microphone icon at the bottom)
  2. Check Teams Settings → Devices → Microphone — is the right input selected?
  3. Click Make a test call — Teams plays your voice back; if you don't hear yourself, the mic isn't capturing
  4. Test in another app (Voice Recorder on Windows) — if that works, Teams permissions are the issue

"Video is frozen for them"

Similar to choppy audio — upload bandwidth issue. Turn off video temporarily and check audio improves.

"Teams crashes during meetings"

Almost always one of:

  • Out-of-date Teams client — Teams updates itself, but a stuck one needs help: close fully (right-click system tray → Quit), then relaunch
  • Driver issue with webcam or microphone — close other apps using the camera
  • Low RAM — close other heavy apps (Chrome with 20 tabs is the usual suspect)

"Background blur / virtual background not working"

Newer Teams clients require:

  • A laptop with a supported CPU (most modern ones; very old laptops fail)
  • The right Teams client version — sign out and back in to force an update

Reset Teams cache

If Teams is misbehaving in weird ways, reset its cache:

Windows:<br>1. Close Teams completely<br>2. Windows + R → %appdata%\Microsoft\Teams<br>3. Delete everything in that folder<br>4. Reopen Teams — it'll re-sync

You'll have to sign in again. Your chats and channels are server-side, nothing is lost.

When to ticket

Open a ticket if:

  • Multiple people on the same network have issues simultaneously
  • Calls fail to connect entirely (no audio either way)
  • A specific scheduled meeting consistently fails while ad-hoc calls work