Despite having a good WiFi or Ethernet connection, regardless of which network I'm on, if I join a Microsoft Teams call, all network connectivity stops working and teams simultaneously reports poor call quality and no network connectivity. All this while on an active call which I can see and hear. Here's a full description of symptoms. Every time I connect to a Teams call: Incoming call quality is ok. I can hear and see others. Outgoing call quality is very poor. Others say my voice is breaking up. If I unmute and speak for more than a few seconds, I am booted from the call. If I stay muted I can stay on the call indefinitely. I can share my screen just fine, I don't get kicked from the call. Teams periodically puts up a warning symbol in the call controls reporting poor connectivity. Teams puts up a blue banner stating that I have been disconnected from the internet. (Intermittent) Teams puts up a big overlay on top of the whole app saying I have been disconnected The call continues though all of this, including voice and video. All other network connectivity is broken (e.g.: Browsers cannot load pages, network drives stop working) Text chat features work fine (but not during calls, where they fail to work like all other network activity) The instant the call ends, all the symptoms stop. I can access network resources again. My wifi connection is fine. I've tested using wired networking and encounter the exact same issue. I've also tried various audio devices and disconnecting all peripherals as longshot solutions. No dice. I don't have anything weird on my system as far as I am aware. Teams works fine on other machines but not on my primary laptop. This issue not only makes Microsoft Teams itself nearly unusable, it knocks my whole system offline for the duration of the call, which is incredibly frustrating. I'm booting into Windows 10 on a 2015 MacBook Pro 13". I have all the latest patches for everything. I've seen two other people here who have what I think is the same issue as mine, but their question threads didn't have any solutions either, and now they're locked. https://answers.microsoft.com/en-us/msoffice/forum/all/microsoft-teams-always-appears-poor-network/1a9ef89c-e495-4e2c-b108-d5b8702a54a8 https://answers.microsoft.com/en-us/msoffice/forum/all/teams-kills-all-connections/6b9dd383-df31-4bec-957a-41ee478eab3e Does anyone have any idea what could be going wrong? Any solutions? Any more info needed from me about my setup?

Hi there, Welcome to post your concern in community. For the display name, you can go to right top area, click name, choose " My Profile ", then you can find " Edit profile " in the left side. Go back to your issue, for the very first, we'd like to confirm that whether it's a desktop client related issue or a service problem. You you can log in Teams web to check if the issue persists. If web side doesn't show any connection error, then it belongs to the Teams client issue. For the client issue, we usually have Update your Teams to the latest version. Click your profile > Check for updates , then the client will automatically update in the background. Clean Teams client cached files in this path: %appdata%\Microsoft\teams . (Remember to back up first) However, if Teams web also happens to the same situation, your network should also be taken into consideration. If you're using VPNs in your network, they're typically not designed or configured to support real-time media. If you're in this condition, we recommend using a split-tunnel VPN for your network access. And you can download Skype for Business Network Assessment Tool to help you test whether your network is ready for Teams. This tool will test all the ports Teams needed as well as network impairments. You can visit this link to get detailed instruction: https://docs.microsoft.com/en-us/microsoftteams/upgrade-prepare-environment-prepare-network#test-the-network In the end, you can also get Teams logs ( Ctrl + Alt + Shift +1 ) and send them to me. I will help you check to see if we can find something from it. I will generate a private message for you later to collect, please check it. Best Regards, Shawn

Web client works fine. No issues with network connectivity. I was able to place a call no problem. Teams is up to date. You have Microsoft Teams Version 1.2.00.26774 (64-bit). It was last updated on 10/9/19. After clearing the %appdata%\Microsoft\teams folder, I found no change to the issues I am having. After joining a meeting I was greeted with a "No internet connectivity" banner and a warning symbol in my call controls panel. You said that if the web version worked, then likely my network is fine, but I ran the Network Assessment Tool anyway. It found no issues: C:\Program Files (x86)\Microsoft Skype for Business Network Assessment Tool>networkassessmenttool.exe /connectivitycheck Skype for Business - Network Assessment Tool Starting Connectivity checks Verifications completed successfully I'd really love to get to the bottom of this. I do a lot of remote work and this has basically killed my ability to attend key meetings.

Another test is to see if Teams App on another machine on the same network has the same problem, or is it only teams app installed on your machine.

The Teams app works fine on other machines on the same network. It only fails in this way on my primary work machine (i.e.: the machine where I really need to use it). There is no obvious problem with that machine either, until I try to use Teams.

Unfortunately you are using Teams on windows10 running on a Macbook Pro. This probably adds a layer of complexity to the problem you are facing and may limit full compatibility? I am also not sure this might be a supported configuration by Microsoft as well ? If you have found others who face the problem perhaps you can report it to Teams uservoice? https://microsoftteams.uservoice.com

Microsoft Teams Kills all Network Connectivity During Calls

Anonymous

Despite having a good WiFi or Ethernet connection, regardless of which network I'm on, if I join a Microsoft Teams call, all network connectivity stops working and teams simultaneously reports poor call quality and no network connectivity. All this while on an active call which I can see and hear. Here's a full description of symptoms.

Every time I connect to a Teams call:

Incoming call quality is ok. I can hear and see others.
Outgoing call quality is very poor. Others say my voice is breaking up.
If I unmute and speak for more than a few seconds, I am booted from the call.
If I stay muted I can stay on the call indefinitely.
I can share my screen just fine, I don't get kicked from the call.
Teams periodically puts up a warning symbol in the call controls reporting poor connectivity.
Teams puts up a blue banner stating that I have been disconnected from the internet.
(Intermittent) Teams puts up a big overlay on top of the whole app saying I have been disconnected
The call continues though all of this, including voice and video.
All other network connectivity is broken (e.g.: Browsers cannot load pages, network drives stop working)
Text chat features work fine (but not during calls, where they fail to work like all other network activity)

The instant the call ends, all the symptoms stop. I can access network resources again. My wifi connection is fine. I've tested using wired networking and encounter the exact same issue. I've also tried various audio devices and disconnecting all peripherals as longshot solutions. No dice. I don't have anything weird on my system as far as I am aware. Teams works fine on other machines but not on my primary laptop.

This issue not only makes Microsoft Teams itself nearly unusable, it knocks my whole system offline for the duration of the call, which is incredibly frustrating.

I'm booting into Windows 10 on a 2015 MacBook Pro 13". I have all the latest patches for everything. I've seen two other people here who have what I think is the same issue as mine, but their question threads didn't have any solutions either, and now they're locked.

https://answers.microsoft.com/en-us/msoffice/forum/all/microsoft-teams-always-appears-poor-network/1a9ef89c-e495-4e2c-b108-d5b8702a54a8

https://answers.microsoft.com/en-us/msoffice/forum/all/teams-kills-all-connections/6b9dd383-df31-4bec-957a-41ee478eab3e

Does anyone have any idea what could be going wrong? Any solutions? Any more info needed from me about my setup?

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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133 answers

Anonymous

2019-10-28T18:23:58+00:00
Hi there,

Welcome to post your concern in community.

For the display name, you can go to right top area, click name, choose "My Profile", then you can find "Edit profile" in the left side.

Go back to your issue, for the very first, we'd like to confirm that whether it's a desktop client related issue or a service problem. You you can log in Teams web to check if the issue persists. If web side doesn't show any connection error, then it belongs to the Teams client issue.

For the client issue, we usually have
- Update your Teams to the latest version. Click your profile > Check for updates, then the client will automatically update in the background.
- Clean Teams client cached files in this path: %appdata%\Microsoft\teams. (Remember to back up first)
However, if Teams web also happens to the same situation, your network should also be taken into consideration.
- If you're using VPNs in your network, they're typically not designed or configured to support real-time media. If you're in this condition, we recommend using a split-tunnel VPN for your network access.
- And you can downloadSkype for Business Network Assessment Tool to help you test whether your network is ready for Teams. This tool will test all the ports Teams needed as well as network impairments. You can visit this link to get detailed instruction: https://docs.microsoft.com/en-us/microsoftteams/upgrade-prepare-environment-prepare-network#test-the-network
In the end, you can also get Teams logs (Ctrl + Alt + Shift +1) and send them to me. I will help you check to see if we can find something from it. I will generate a private message for you later to collect, please check it.

Best Regards,

Shawn
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Anonymous

2019-10-28T19:03:07+00:00

Web client works fine. No issues with network connectivity. I was able to place a call no problem.

Teams is up to date.

You have Microsoft Teams Version 1.2.00.26774 (64-bit). It was last updated on 10/9/19.

After clearing the %appdata%\Microsoft\teams folder, I found no change to the issues I am having. After joining a meeting I was greeted with a "No internet connectivity" banner and a warning symbol in my call controls panel.

You said that if the web version worked, then likely my network is fine, but I ran the Network Assessment Tool anyway. It found no issues:

C:\Program Files (x86)\Microsoft Skype for Business Network Assessment Tool>networkassessmenttool.exe /connectivitycheck

Skype for Business - Network Assessment Tool

Starting Connectivity checks

Verifications completed successfully

I'd really love to get to the bottom of this. I do a lot of remote work and this has basically killed my ability to attend key meetings.
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Vincent Choy 11,260 Reputation points Volunteer Moderator

2019-10-29T04:42:09+00:00

Another test is to see if Teams App on another machine on the same network has the same problem, or is it only teams app installed on your machine.
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Anonymous

2019-10-29T15:36:51+00:00

The Teams app works fine on other machines on the same network. It only fails in this way on my primary work machine (i.e.: the machine where I really need to use it). There is no obvious problem with that machine either, until I try to use Teams.
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Vincent Choy 11,260 Reputation points Volunteer Moderator

2019-10-30T02:13:22+00:00

Unfortunately you are using Teams on windows10 running on a Macbook Pro. This probably adds a layer of complexity to the problem you are facing and may limit full compatibility? I am also not sure this might be a supported configuration by Microsoft as well ? If you have found others who face the problem perhaps you can report it to Teams uservoice?

https://microsoftteams.uservoice.com
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