Symptoms
- Others can't hear you in Zoom/Teams but mic works in other apps
- App shows 'no microphone detected'
- Mic works on a test call but not in meetings
- Volume indicator doesn't move when you speak
Likely causes
- CommonWrong microphone selected in the app's audio settingsVideo call apps have their own separate audio device selection independent of system settings.
- CommonApp doesn't have microphone permissionOperating systems can block an app's mic access even if the mic works system-wide.
- CommonMicrophone muted within the meetingIt's easy to join a meeting already muted or hit the mute hotkey by accident.
- PossibleAnother app is using the microphone exclusivelySome apps lock the mic so no other program can access it at the same time.
- Less commonOutdated app version or corrupted installA bug in an older app version can break audio device handling.
What to do
- Check the in-meeting mute button first, since this is the most common and simplest cause.
- In the app's audio settings (not system settings), confirm the correct microphone is selected as input.
- Check system privacy settings to make sure the app is allowed to access the microphone.
- Close other apps that might be using the microphone, like other call apps or recording software.
- Run the app's built-in audio test (most video call apps have a 'test mic' option in settings) before joining a real meeting.
- Update the app to its latest version.
- Restart the computer if the microphone still doesn't register any input level.
Tools and parts
- None
USB or Bluetooth microphone/headsetSearch: “USB headset with mic for video calls”
When to call a pro
If the mic tests fine in system settings and other apps but never works in one specific app after reinstalling it, contact that app's support, since it may be a known software bug.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.