This error message appeared after a user has logged back into the computer. It looks like Teams is trying to update itself but has failed to.

Temporary workarounds we have done is to remove Teams and download the latest update through the Teams website. But when Teams pushes another update, the same error message will appear.

Another workaround we did is go to C:\ProgramData\User\Microsoft\Teams and set the security permission of that folder so the user has full control.And then do a restart on the machine.

I wanted to ask if anyone has encountered this error and if there's hopefully a permanent solution to this.

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 meeting:

• 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 outside calls but not during calls, where they fail to work like all other network activity)


• The instant the meeting 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. Teams Version 1.2.00.26774 (64-bit)

I've tried 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.

I ran the Skype for Business Network Assessment Tool. 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

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

I've seen two other people who have what I think is the same issue as mine, but their question threads didn't have any solutions, 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?

When a tenant admin removes a user from Office365, the user is also removed from all groups obviously. This triggers a notification in Teams saying that the user has been removed from the team. The notification wrongly says that the team owner (or one of the team owners) deleted the user from the team. This is not correct, and causes the team owners to think that their account has been compromised.
A better way to handle this event is just a simple email to the team owners, or at least an option to disable said notifications. In any case, if a notification is sent, the information displayed must be correct. Using the team owner is not correct.

In Skype for Business, any and all telephone numbers published in AD (i.e. main / primary "telephoneNumber", "mobile", "homePhone", "otherTelephone" etc.) would appear in a drop-down menu (along with the default "Skype for Business call") any time there was a call button, either from the buddy list or from the contact card.

In Teams, this is quite broken:

1 Phone numbers visible in the contact card in Teams are not diallable / hyperlinked.

2 The Call button from the contact card presents a different user experience to the Call button in the chat screen. In the chat screen, it provides "Teams call" and the "mobile" phone number field (if populated in AD) in the drop-down menu as options. In the contact card, it just defaults to "Teams call" without giving you any option to dial alternate published numbers for the user.

3 The drop-down menu behind the Call button should display any and all telephone number fields published in AD, not just the "mobile" phone number field. Understand the need to push a "Teams call" as a preferred option, but there are legitimate customer scenarios where a Teams call is not possible, and click-to-dial to other published telephone numbers for the contact is required.