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?

I experienced same problem now. My network is okay and fixed, but every time I try to open MS team it will crashed my internet connect and it will take a minute to return the connection and need also to close also the teams apps on my desktop. Any solution about this?

this update did not fix the issue we updated lenovo dock and still have the issues.

Through the driver udpate, it's getting even worse in our network. Now the computers with the applied patch experience BSOD several times a day. We experience this, with different lenovo thinkpad models. Details could be found in lenovo forum: Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

For us the " ThinkPad USB3.0 Ethernet Adapter Driver for Windows 10 " driver update fixed this: It is stated in the README file: " Version: Win10 10.44.1214.2020 1. Fixed Network will loss when Teams and QQ video call is on going" https://support.lenovo.com/us/en/downloads/ds542615-thinkpad-usb30-ethernet-adapter-driver-for-windows-10-103905182020-windows-8-86005182020-windows-775305182020

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

2021-01-29T20:43:17+00:00

I experienced same problem now. My network is okay and fixed, but every time I try to open MS team it will crashed my internet connect and it will take a minute to return the connection and need also to close also the teams apps on my desktop. Any solution about this?
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Anonymous

2021-02-04T01:25:27+00:00

this update did not fix the issue we updated lenovo dock and still have the issues.
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Anonymous

2021-02-04T08:46:28+00:00

Through the driver udpate, it's getting even worse in our network.

Now the computers with the applied patch experience BSOD several times a day.

We experience this, with different lenovo thinkpad models.

Details could be found in lenovo forum:

Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC
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1 person found this answer helpful.

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Anonymous

2021-03-02T15:32:36+00:00

For us the "ThinkPad USB3.0 Ethernet Adapter Driver for Windows 10" driver update fixed this:

It is stated in the README file:

"Version: Win10 10.44.1214.2020

1. Fixed Network will loss when Teams and QQ video call is on going"

https://support.lenovo.com/us/en/downloads/ds542615-thinkpad-usb30-ethernet-adapter-driver-for-windows-10-103905182020-windows-8-86005182020-windows-775305182020
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3 people found this answer helpful.

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