Microsoft Teams Microphone Not Working? Fixes That Help

If your microphone is not working in Microsoft Teams, first check that Teams is using the right input device and that your computer allows microphone access. Then test the mic in Teams and work through the device, connection, and app checks below to isolate the cause.

Check the microphone selected in Teams

In Teams, open Settings and more (the three-dot menu), then select Settings and Devices. In some versions, the label or location may differ slightly.
Under Audio settings, choose the microphone you actually want to use. A laptop with a headset plugged in, for example, may show both its built-in microphone and the headset microphone.
Speak and watch the microphone input indicator, if shown. If it responds, Teams is receiving sound; make a test call if available to check the full audio path.

Do not assume the device called “Default” is the one you expect. The operating system’s default input may change when you connect a headset, dock, monitor, or Bluetooth device. Selecting the intended mic explicitly can resolve the issue without changing anything else.

Confirm the mic works outside Teams

Use your computer’s built-in sound settings or a trusted recording app to check whether the microphone captures sound. If it fails there too, the problem is probably not specific to Teams. Check that the mic is connected, powered on, and not muted by a physical switch or headset control. For a USB microphone, try another port and reconnect it directly to the computer rather than through a hub, if practical.

For a Bluetooth headset, confirm it is connected for audio, not merely paired. Disconnect and reconnect it, and check that the computer has not switched to another input. Bluetooth devices can expose separate playback and microphone options, so verify the selected input rather than relying on the headset name alone.

Review operating-system microphone permissions

Teams can select a microphone only if the operating system permits the app to access it. Permission controls vary by Windows or macOS version, but look in the system’s Privacy or Privacy & security settings for microphone access. Make sure access is enabled for apps and, where applicable, desktop apps. If you changed a permission, quit and reopen Teams before testing again.

On a work or school computer, an administrator may manage privacy settings. If an option is unavailable or switches back, contact the organization’s IT support rather than trying to bypass the restriction. Also check that another application has not taken exclusive control of the microphone; closing other calling or recording apps is a useful test.

Check mute controls and meeting settings

Look for mute controls at several levels: the Teams meeting toolbar, the headset’s physical mute button, and any inline control on its cable. A muted microphone can appear to be a device failure even when the input meter works. If you can hear others but they cannot hear you, confirm that the meeting’s microphone icon is not muted and that you have selected the correct input.

Some meetings or organization policies may restrict attendee audio. If the microphone works in a test call or another meeting but not in one particular meeting, ask the organizer or IT support whether participant audio is limited. This is different from a microphone that fails everywhere.

Update, restart, and isolate app problems

After checking the hardware, permissions, and selection, restart Teams and the computer. A restart can clear a temporary device connection problem. If Teams has an update available, install it through the app’s update option or your organization’s approved software process. Avoid downloading installers from unfamiliar sites.

Test another app: If the mic works elsewhere but not in Teams, focus on Teams settings, permissions, and app state.
Test another account or device, if permitted: This can help distinguish a local computer problem from an account or policy issue.
Repair or reset the app: On Windows, available app repair or reset options depend on how Teams was installed and on the Windows version. Resetting may clear local app data, so check your organization’s guidance first.

Reinstalling is usually a later step, not the first one. Before doing it, confirm that you can sign in again and that your organization allows the installation method you plan to use.

Common causes and what the symptoms suggest

No sound in Teams or other apps: Check the microphone, cable or connection, mute switch, operating-system input selection, and system permissions.
Sound works elsewhere but not in Teams: Check Teams’ selected input, app permission, meeting mute state, and whether another app is interfering.
The wrong mic is active: Choose the intended device in Teams and verify the system’s default input, especially after connecting a headset or dock.
The mic works in some calls only: Consider meeting controls, attendee restrictions, or a change in the device selected for that session.

A microphone meter that moves confirms that sound is reaching the app; it does not guarantee that other participants can hear you. The meeting may still be muted, the wrong device may be selected for the call, or a policy may limit audio.

Frequently Asked Questions

Why can I hear people in Teams but they cannot hear me?
Playback and microphone input are separate. Select the correct microphone in Teams, check its mute status and operating-system permission, then test the mic outside the meeting.

How do I test my microphone in Microsoft Teams?
Open Teams’ Settings and Devices, select the intended input, and speak to see whether the input indicator responds. If available, use a test call to check more than the input meter.

Why does my microphone work in other apps but not Teams?
Teams may be using a different input, lack permission, or have a temporary app issue. Check its device selection and system access, close other audio apps, and restart Teams.

Why is Teams using my laptop microphone instead of my headset?
Connecting a headset does not always make it the active input. Choose the headset microphone in Teams’ device settings and check that the headset is connected and not muted.

What should I do if Teams still cannot detect my microphone?
Test the device in system sound settings, reconnect it, review privacy permissions, and restart the computer. If it still fails only in Teams, check for app updates or ask your organization’s IT support.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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