Sudden stop of voice in Teams meet

Dear @KATAKI Rajarshi Prasad (ENGIE R&I),

Good day! Welcome to Microsoft Q&A forum!

Based on your description, I understand that you’re experiencing an issue in Microsoft Teams where your microphone suddenly stops working in the middle of a meeting. The mic appears to be automatically muted, showing a cut/disabled icon, and the audio drops unexpectedly. This behavior continues even after reloading Microsoft Teams, and occurs during Teams meetings and calls.

I sincerely apologize for the inconvenience caused by this issue.

To understand the situation better and provide you with the most suitable support, could you confirm the following information: 

• Does the microphone stop working only in Microsoft Teams, or does it also happen in other apps (for example, Zoom, voice recorder, or browser calls)?
• Does this happen in every meeting or only with specific meetings or organizers?
• Are you using a headset, external microphone, Bluetooth device, or your laptop’s built‑in microphone?
• Have you noticed if the issue occurs after a specific action (for example, screen sharing, switching audio devices, or joining another call)?
• Could you please confirm if other users in your organization are experiencing the same microphone issue? If multiple users are affected, I recommend reaching out to your IT Admin and raising a support ticket so the issue can be investigated at the service or tenant level.

Your confirmation would be very helpful in ensuring you receive the most suitable support!

In the meantime, kindly try the following suggestions to check what might have caused the issue:

• Clear Microsoft Teams cache: Sometimes cached files can cause unexpected behavior like the microphone stopping during meetings
  • Please close Microsoft Teams completely
  • Clear the Teams cache on your device following the step-by-step instructions from this article: Clear the Teams client cache
  • Reopen Teams and join a test meeting to check if the microphone remains stable
• Reinstall Microsoft Teams (if needed): If the issue continues after clearing the cache:
  • Uninstall Microsoft Teams from your device
  • Restart the device
  • Reinstall the latest version of Microsoft Teams and test again

I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

If you’re able to share a bit more about your situation, I might be able to suggest some helpful next steps. 

Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful. I appreciate your time and look forward to hearing how things are going! 

Thank you for your time and patience.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". 

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The mic icon changing to a cut/strikethrough in Teams means the microphone is muted or disabled. Several things in Teams can cause this during a meeting:

1. Mic muted in meeting controls

• In the meeting controls, if the Mic icon shows a line through it, the mic is muted.
• Select Mic to unmute.
• On Windows, the mic can also be toggled with Ctrl + Shift + M or from the Windows taskbar mic icon, which can accidentally mute the mic.

2. Organizer or presenter disabling attendee mics

• Meeting organizers, co-organizers, or presenters can mute attendees or disable their mics.
• If Disable mic for attendees is turned on in People > Manage audio and video > Participant Settings, attendees cannot unmute themselves until this is changed.
• An organizer can also mute an individual participant via Mute participant on that person’s name.

3. Teams remembering a previous mute setting

• Teams remembers the mic preference set on the pre-join screen. If it was muted there, it may reapply that state when rejoining or when network reconnects occur.

4. Device or settings issues

• A physical mute button or switch on a headset or external mic can mute audio even if Teams shows the mic as on.
• If the mic stops working entirely (no input), Teams may appear muted because no audio is detected.

To reduce unexpected muting:

1. During the meeting, verify Mic is on and not toggled by keyboard shortcuts or the Windows taskbar.
2. Ask the organizer to check People > Manage audio and video to ensure Disable mic for attendees is off for attendees who need to speak.
3. Check the physical mic or headset for a hardware mute button or boom arm mute position.
4. In Teams, go to Settings and more > Settings > Devices and confirm the correct Microphone is selected and working (use Make a test call to verify).

If the mic repeatedly cuts out even when not muted, follow the microphone troubleshooting steps in Teams to confirm device access and OS updates are correct.

References:

• My microphone isn't working in Microsoft Teams
• Mute and unmute your mic in Microsoft Teams
• Use meeting controls in Microsoft Teams
• Manage attendee audio and video permissions in Microsoft Teams meetings
• Manage audio settings in Microsoft Teams meetings