the microphone is not working in microsoft teams

Hi @Waleed Radwan, 

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Hi @Waleed Radwan, 

I hope you’re doing well today. 

From your description, that the microphone is not available in Microsoft Teams and it is not working when you try to speak in a call or meeting.  

This behavior usually happens when Teams is not pointing to the intended input device, when the operating system blocks microphone permissions for Teams, or when another setting prevents audio capture even though speakers still work. It can also occur if the device is muted at the hardware level, if Bluetooth is connected to another device, or if Remote Desktop audio recording is not enabled.  

To narrow this down quickly, could you please share the following details? 

1. Which microphone are you using, and how is it connected (built in laptop mic, USB headset, wireless Bluetooth headset), and do you have more than one audio device connected at the same time?  
2. Does the microphone work in other apps on the same device (for example, Windows Sound “Start test”, Voice Recorder, or a browser test), or is it only failing inside Teams?  
3. Are you using the Teams desktop app, Teams on the web, or Teams through Remote Desktop or a virtual desktop session, and is the mic button disabled or greyed out during the call? 

In the meantime, please try these advanced checks in order. 

1/ Confirm Teams is using the correct microphone and run a Test Call  

• Open Microsoft Teams, then select Settings and more (three dots), select Settings, and then select Devices.  
• Under Audio settings, set Microphone to the exact device you want to use, and make sure it is not muted on the device itself.  
• Select Make a test call, record a short message, and confirm the playback works and the test summary shows the microphone is detected.  
• If you are using Bluetooth, disconnect it from any other device first, then reconnect and repeat the test call in Teams.  
• Reference: Manage your device settings in Microsoft Teams - Microsoft Support 

2/ Recheck Windows microphone permissions and input device selection  

• Open Windows Settings, select Privacy & security, select Microphone, and turn on Microphone access, Let apps access your microphone, and Let desktop apps access your microphone, then ensure Microsoft Teams (work or school) is allowed. 
• Open Windows Settings, select System, select Sound, and under Input choose the intended microphone and confirm the input volume is not muted.  
• Select More sound settings, go to the Recording tab, and enable the microphone if it is disabled.  
• Close Teams completely and restart the device, then test again in Teams with Make a test call.  
• Reference: My microphone isn't working in Microsoft Teams - Microsoft Support 

3/ Run input audio troubleshooting and refresh the audio driver stack  

• Open Windows Settings, select System, select Sound, scroll to Advanced, and run Input devices under Troubleshoot common sound problems.  
• If Windows is not reliably detecting the mic, open Device Manager, expand Sound, video and game controllers, uninstall the audio device, select the option to remove the driver if shown, and then restart the device.  
• After restart, return to Device Manager, select Scan for hardware changes, and then update the audio driver if an update is offered.  
• Reopen Teams, return to Settings then Devices, select the correct microphone again, and re run Make a test call 
• Reference: Fix microphone problems - Microsoft Support 

4/ Clear the Teams cache  

Corrupted cache files are a frequent cause of hardware recognition failures in modern Teams. 

• Mac: Quit Teams completely. Open Finder, press Command + Shift + G, and enter ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams. Move this folder to the trash, empty it, and restart Teams. 
• Windows: Quit Teams. Press the Windows Key + R, type %localappdata%\Packages\MSTeams_8wekyb3d8bbwe\LocalCache, delete the contents of the folder, and restart Teams. (Alternatively, go to Windows Settings > Apps > Installed apps > Microsoft Teams > Advanced options > Reset). 

5/ Verify Physical Connections 

• If you are using an external headset, double-check that a physical mute button on the wire or a flip-to-mute boom arm isn't activated. 
• If you are using a Bluetooth device, unpair it from your system and pair it again to refresh the audio routing. 

Once you share the answers to the questions above, I will tailor the next steps specifically to your device and connection type to move this forward efficiently. 

I hope this information is helpful. Please follow these steps and let me know if it works for you. If you have any updates regarding the issue, please feel free to share them with me.          

Thank you for your patience and your understanding. I look forward to continuing the conversation. 

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Use these steps to get the microphone working in Microsoft Teams.

1. Check Teams mute and physical mic

• In the meeting controls, make sure the Mic icon is not crossed out. If it is, select it to Unmute mic.
• If using a headset or external mic, check for a physical mute switch or boom arm position and set it to unmuted.

2. Verify Teams is using the correct microphone

• In Teams, select Settings and more (…) > Settings > Devices.
• Under Audio settings, choose the correct device from the Microphone dropdown.
• Select Make a test call, follow the Test Call Bot instructions, and confirm that your voice is recorded and played back.
  • If it does not work, change the microphone device in the dropdown and test again.

3. Allow microphone access in Windows (Teams desktop app)

• Open Settings from the Windows Start menu.
• Go to Privacy & security > Microphone.
• Turn on Microphone access.
• Turn on Let apps access your microphone.
• Turn on Microsoft Teams (work or school).
• Turn on Let desktop apps access your microphone.
• If these were already on, toggle them off and back on, then restart the device.

4. Check Windows sound input settings

• Open Settings > System > Sound.
• Under Input:
  • Select your mic under Choose a device for speaking or recording. If it is missing, select Add device to pair it.
  • Ensure the Volume slider is turned up and not muted.
• If the mic still does not work, go to Advanced > More sound settings, open the Recording tab, right‑click your mic, and select Enable.

5. If using Teams in a browser

• Ensure the browser is allowed to use the mic.
• For Microsoft Edge:
  • Select Settings and more (…) > Settings > Cookies and site permissions > Microphone.
  • Turn on Ask before accessing (recommended).
• For Google Chrome:
  • Open Settings > Privacy and security > Site settings > Permissions > Microphone.
  • At the top, select the correct device.
  • Under Default behavior, select Sites can ask to use your microphone.

6. If using macOS, iOS, or Safari

• On macOS:
  • Open System Preferences > Security & Privacy > Microphone.
  • Under Privacy, ensure Microsoft Teams is checked.
  • Restart the device.
• On iOS:
  • Open Settings > Privacy > Microphone.
  • Turn on the Microsoft Teams toggle.
  • Restart the device.
• In Safari:
  • Open Preferences > Websites.
  • Under General, select Microphone.
  • Next to When visiting other websites, choose Ask or Allow.

7. If still not working

• Make sure Teams and the operating system are fully updated.
• If the mic is external and still not detected, unplug and plug it back in, or try another USB port or device.
• As a temporary workaround in meetings, use Call me back in Teams to use phone audio while sharing content from the computer.

References:

• My microphone isn't working in Microsoft Teams
• Mic stopped working about a month ago - Microsoft Q&A
• internal microphone on windows 11 not working - Microsoft Q&A
• Internal Microphone not detected - Microsoft Q&A
• Issue when going to a live teams meeting - Microsoft Q&A
• How to fix this. no audio device is installed - Microsoft Q&A