Mics stop working in breakout rooms on Teams

Question

Mics stop working in breakout rooms on Teams

Hannah 110

When using breakout rooms in a teams meeting, the microphone button disappears and the attendees are unable to unmute themselves. Additionally, when they rejoin the main meeting, they sometimes experience microphone issues that cause them to need to leave the meeting and rejoin.

Stephanie Semmence 20 Reputation points

2025-08-07T14:46:31.78+00:00

This started 2 days ago and is getting worse. It does not impact everybody and is quite random
Pascal Sherman 0 Reputation points

2025-08-07T18:21:21.62+00:00

We also experienced the same issue. Wasn't all participants and was isolated to a specific client type. iOS users didn't experience the issue joining from a phone.
Matthew 0 Reputation points

2025-08-08T00:57:29.4266667+00:00

I see this after returning to the main meeting after being in a breakout room

and my microphone mute button is missing:
David Russell 10 Reputation points

2025-08-08T06:54:26.1033333+00:00

We have multiple staff reporting the same issues with breakout sessions in the last two days. The callers are unable to remove themselves from Mute while in a breakout room.

This appears to be a larger impact problem across multiple customers. Could we please have someone from Microsoft investigate if this is being reported more broadly as a systemic issue?

Thank you,

David.
Vijayakumar S/INFO-TECH/BIOCON 0 Reputation points

2025-08-08T07:00:35.0066667+00:00

when I minimize and then maximize the meeting windows, participants microphone are automatically getting enabled without any action from their side
Flemm, Aimé 0 Reputation points

2025-08-11T13:26:42.1233333+00:00

we are experiencing the same issue.
Thomson, Michael 0 Reputation points

2025-08-11T14:21:54.5366667+00:00

We are also experiencing the same.
Thomson, Michael 0 Reputation points

2025-08-11T14:22:58.6666667+00:00

Same issue here, have had the same meeting setup for over a year and this just started last week. Windows Clients.
Francesca Sadi 0 Reputation points

2025-08-11T16:58:00.7733333+00:00

We are also experiencing the same issue (not seeing a mic option) at my company. This started last week and continuing this week.
Denise Overend-Clarke 0 Reputation points

2025-08-11T23:15:26.74+00:00

I am experiencing the same issue, seems quite random. I'll try the maximise/minimise strategy next time.
AG 5 Reputation points

2025-08-12T16:55:17.7833333+00:00

We experienced this today as well. Ensuring the participants were unmuted prior to initiating the breakout rooms still resulted in the same issue.
Davidson, Tom 0 Reputation points

2025-08-13T14:26:46.2833333+00:00

Our organization is having the same issue. We had the problem where 2 out of 5 breakout rooms had microphones that could not be unmuted on 8/11/2025 at 10PM EST. The next meeting I ran with breakout rooms was today (8/13) and 6 of the 9 breakout rooms could not unmute their microphones. So this is an issue with all of our breakout room meetings this week.
Maggie Hume 0 Reputation points

2025-08-13T16:14:49.5266667+00:00

I am experiencing the same issue.
Reanier-Briggs, Jeanelle (DSHS/OOS/HRD) 15 Reputation points

2025-08-13T16:18:39.41+00:00

@Julie Hu If you could please advise on what MS is doing to remedy this issue, it would be greatly appreciated. We are really struggling here. Our IT Admin has escalated this issue to you as well, but still no promise of when we can expect a resolution.
Glenda Boyles 0 Reputation points

2025-08-14T17:39:53.7833333+00:00

We are having the same issues in breakout rooms. We are beginning our virtual applicant interview beginning this month. We really need a fix, please.
David A Ainsworth 0 Reputation points

2025-08-14T23:59:30.38+00:00

We had the same issue today, about 1 member in each breakout room (not the presenter) lost the ability to unmute their mic. They all had access to use their mic before breakout and the issue started during breakout and seems to have resolved when we closed the breakout room.

8 answers

Your answer

Stephanie Semmence 20 Reputation points

2025-08-07T14:46:31.78+00:00

This started 2 days ago and is getting worse. It does not impact everybody and is quite random
Pascal Sherman 0 Reputation points

2025-08-07T18:21:21.62+00:00

We also experienced the same issue. Wasn't all participants and was isolated to a specific client type. iOS users didn't experience the issue joining from a phone.
Matthew 0 Reputation points

2025-08-08T00:57:29.4266667+00:00

I see this after returning to the main meeting after being in a breakout room

and my microphone mute button is missing:
David Russell 10 Reputation points

2025-08-08T06:54:26.1033333+00:00

We have multiple staff reporting the same issues with breakout sessions in the last two days. The callers are unable to remove themselves from Mute while in a breakout room.

This appears to be a larger impact problem across multiple customers. Could we please have someone from Microsoft investigate if this is being reported more broadly as a systemic issue?

Thank you,

David.
Vijayakumar S/INFO-TECH/BIOCON 0 Reputation points

2025-08-08T07:00:35.0066667+00:00

when I minimize and then maximize the meeting windows, participants microphone are automatically getting enabled without any action from their side
Flemm, Aimé 0 Reputation points

2025-08-11T13:26:42.1233333+00:00

we are experiencing the same issue.
Thomson, Michael 0 Reputation points

2025-08-11T14:21:54.5366667+00:00

We are also experiencing the same.
Thomson, Michael 0 Reputation points

2025-08-11T14:22:58.6666667+00:00

Same issue here, have had the same meeting setup for over a year and this just started last week. Windows Clients.
Francesca Sadi 0 Reputation points

2025-08-11T16:58:00.7733333+00:00

We are also experiencing the same issue (not seeing a mic option) at my company. This started last week and continuing this week.
Denise Overend-Clarke 0 Reputation points

2025-08-11T23:15:26.74+00:00

I am experiencing the same issue, seems quite random. I'll try the maximise/minimise strategy next time.
AG 5 Reputation points

2025-08-12T16:55:17.7833333+00:00

We experienced this today as well. Ensuring the participants were unmuted prior to initiating the breakout rooms still resulted in the same issue.
Davidson, Tom 0 Reputation points

2025-08-13T14:26:46.2833333+00:00

Our organization is having the same issue. We had the problem where 2 out of 5 breakout rooms had microphones that could not be unmuted on 8/11/2025 at 10PM EST. The next meeting I ran with breakout rooms was today (8/13) and 6 of the 9 breakout rooms could not unmute their microphones. So this is an issue with all of our breakout room meetings this week.
Maggie Hume 0 Reputation points

2025-08-13T16:14:49.5266667+00:00

I am experiencing the same issue.
Reanier-Briggs, Jeanelle (DSHS/OOS/HRD) 15 Reputation points

2025-08-13T16:18:39.41+00:00

@Julie Hu If you could please advise on what MS is doing to remedy this issue, it would be greatly appreciated. We are really struggling here. Our IT Admin has escalated this issue to you as well, but still no promise of when we can expect a resolution.
Glenda Boyles 0 Reputation points

2025-08-14T17:39:53.7833333+00:00

We are having the same issues in breakout rooms. We are beginning our virtual applicant interview beginning this month. We really need a fix, please.
David A Ainsworth 0 Reputation points

2025-08-14T23:59:30.38+00:00

We had the same issue today, about 1 member in each breakout room (not the presenter) lost the ability to unmute their mic. They all had access to use their mic before breakout and the issue started during breakout and seems to have resolved when we closed the breakout room.

Answer 1

Hi all,

Thanks so much for confirming those details as they really help clarify the current situation. I’ve heard from other users experiencing similar issues, so it might be a broader concern, even if it’s not yet listed on the Microsoft 365 Service Health dashboard.

I’ll keep watching for any official updates and share them with you as soon as they’re available. If the issue persists after today, reaching out to your IT Admin to open a support ticket with Microsoft in Microsoft 365 Admin Center (including your meeting diagnostics) would be a good next step.

Here’s what your Office 365 Global Admin should do next:

Submit a Service Request: The Global Admin should create a service request with Microsoft support to get advanced technical assistance and diagnostics. For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin.

Melinda Hills 5 Reputation points

2025-08-14T02:17:30.8333333+00:00

Is there an update?

Answer 2

Moni Jones 20

Hey all! My company has been seeing this as well. I've found that when you're in the breakout room and the mic option is missing, if you tap the "microphone mute" button on your keyboard the icon comes back. Worked for multiple people so far. Easier than having to leave the call and come back.

Scott, Colleen 0 Reputation points

2025-08-18T18:28:28.9933333+00:00

Confirming this worked for us! (may need to do several times)

Answer 3

Hi all,

Good day!

Thank you for informing me with details of your current situation with attendees' microphone button being missing in breakout rooms.

I've checked the Microsoft 365 Service Health dashboard and the status for Microsoft Teams is still healthy.

User's image

Even though I've seen some helpful workarounds from some users in this thread, I still recommend asking your IT Admin to raise a support ticket in the Admin Center so this issue could be investigated further and fixed.

Therefore, here’s what your Office 365 Global Admin should do next:

Submit a Service Request: The Global Admin should create a service request with Microsoft support to get advanced technical assistance and diagnostics. For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin

Please note that forum moderators do not have direct control over application development or bug fixes. However, our goal is to assist you as much as possible by providing guidance, alternative solutions, and forwarding your feedback to the appropriate teams.

Besides, asking your IT Admin to Report an issue in Service Health in the Admin Center would be a great way for this issue to be noticed as many users are experiencing it.

User's image

Thank you for your patience and understanding!

Julie-Hu 1,580 Reputation points Microsoft External Staff Moderator

2025-08-13T08:42:34.3733333+00:00

Hi @Hannah,

Have a good day! Thank you for raising your concern about this issue.

As many other users have the same question, it's better for everyone to report this issue so that the product team would be aware of this and work on a fix for it soon.

If possible, feel free to Accept the above Answer so that it would be pinned to the top and other users would know what to do when they have this issue.

Thank you so much.

Answer 4

AG 5

Our IT Admin has informed us that this is now resolved. Is anyone else still experiencing the issue?

Danda 20 Reputation points

2025-08-18T18:43:01.5766667+00:00

We had a call today with 20+ people, none of which seemed to experience it (one of which having had that problem repeatedly last week). On the other hand, some organisers seemed to get unmuted when moving between rooms.
MichaelM 0 Reputation points

2025-08-21T13:00:10.4533333+00:00

We had 15-20 people on a call just now and experienced an issue with several people not being able to mute/unmute. Trying to identify devices of those that had problems (maybe Apple vs Android?) and troubleshoot.

Answer 5

Julie-Hu 1,580 Microsoft External Staff Moderator

Dear @Hannah,

Good day! Welcome to Q&A forum!

To understand the situation better, could you confirm the following information:

Is the issue happening to everyone or just certain people? When did this issue start?
Does it happen in every meeting with breakout rooms or only sometimes?
Are the affected users using Teams on Windows, macOS, mobile app, or web?
Is the host also experiencing the issue, or just the attendees?
Do the affected users have the latest version of Teams?

Your confirmation would be very helpful!

Kindly let me know if there are any 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!

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

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Hannah 110 Reputation points

2025-08-07T15:30:52.53+00:00

It is happening to almost everyone on my meeting. It started this morning during a full day training that I am still in, so I haven't tried this with other meetings. Everyone impacted and everyone in the meeting is using Teams on Windows. The host did not join a breakout group, so I am not sure, but everyone is able to speak within the main meeting room. Yes we should all have the latest version of teams as controlled by our company.
Jeffrey Mehlhoff 0 Reputation points

2025-08-07T15:49:08.45+00:00

Having same issue and see other posts about same issue. Most of our users lose ability to speak in breakout rooms. No mute and unmute button. When they return some have to leave and rejoin. Not a good week as many trainings happening where we need that functionality. Adding my comments to make Microsoft aware and havent seen any updates on health or acknowledgement there is a problem
Isabelle K 0 Reputation points

2025-08-07T21:13:01.86+00:00

Also having this issue. Most users in the breakout room unable to unmute themselves or even see the microphone button. This bug is already affecting a lot of people, so I hope Microsoft is aware and working on it.
Vijayakumar S/INFO-TECH/BIOCON 0 Reputation points

2025-08-08T07:11:45.4333333+00:00

I’m experiencing the following issues during breakout room sessions:

The mute option is not visible for participants once inside the breakout room.

I’ve also observed that when we join a breakout room and then minimize and maximize the meeting window, participants' microphones are automatically enabled without any manual action from their side.

These issues may cause unintentional audio sharing and impact the meeting experience
Stephanie Semmence 20 Reputation points

2025-08-08T08:24:58.7133333+00:00

So far, hosts appear unaffected. We have run a 3-session workshop with 3 separate invites pread over two days. It impacted one person in session one (on 5 August), three on session two (AM on 7 August) and five in session 3 (PM on 7 August).
Julie-Hu 1,580 Reputation points Microsoft External Staff Moderator

2025-08-08T09:13:38.3366667+00:00

Hi @Hannah and all,

Thanks so much for confirming those details as they really help clarify the current situation. I’ve heard from other users experiencing similar issues, so it might be a broader concern, even if it’s not yet listed on the Microsoft 365 Service Health dashboard.

I’ll keep watching for any official updates and share them with you as soon as they’re available. If the issue persists after today’s training, opening a support ticket with Microsoft (including your meeting diagnostics) would be a good next step.

When I tested this, the host is indeed unaffected, the people that joined breakout rooms would have their mic button missing, even when going back to the main room.

When I was in Room 1 (I was the host), my mic button is there:

But my colleague would not have the mic button:

Therefore, here’s what your Office 365 Global Admin should do next:

Submit a Service Request: The Global Admin should create a service request with Microsoft support to get advanced technical assistance and diagnostics. For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin
Ma 5 Reputation points

2025-08-08T10:43:05.38+00:00

This is happening to me as well. It started on Monday for just 3/15 and it has been getting worse every day since, so that today 12/22 students had problems with the mics in BOR. Some students discovered that they had to unmute themselves before going into the break-out room. It worked for some, and only for a short time. ITMS at uni said they can't do anything. All students have been instructed to delete and reinstall the app, to rebook their device. None of this has made any difference. Today, I had to tell them to keep going in and out until it worked! It took 6 attempts, and it massively disrupted the lesson. Our course is entirely online, so this is a very big deal!
Stephanie Semmence 20 Reputation points

2025-08-08T10:46:54.5133333+00:00

Some of our trainers ran another workshop this morning, and one of the co-facilitators lost both mic and audio in one of the 7 breakout rooms, but it worked in the others. Participants also had some issues, and rejoining the main room and going back fixed it for a few but not all of them
Sheree 0 Reputation points

2025-08-12T04:34:43.4566667+00:00

I have hosted a workshop this morning and experienced this issue with a number of participants in breakout rooms. Is this a known wider issue and is there a solution. Leaving the breakout and rejoining worked for some participants but no all. Any help would be appreciated.

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Mics stop working in breakout rooms on Teams

8 answers

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