Teams Q&A fails to start - error CAA2000B

Lee SCS 5

We have an Office365 Apps for Enterprise license for our users and a Teams Essentials License for users who need to hold meetings.

We had been able to enable the Q&A feature, however, when trying to enable it now, it says something went wrong. If we click retry enough (5-15 times), we eventually get an error CAA2000B with a server message that suggests Yammer is disabled.

Error code: CAA2000B

Correlation ID: 1a90a2da...

TimeStamp: 2023-01-12...

More information: https://www.microsoft.com/wamerrors

Server message: AADSTS500014: The service principal for resource 'https://web.yammer.com/teamsmetting&#; is disabled. This indicate that a subscription within the tenant has lapsed, or that the administrator for this tenant has disabled the application, preventing tokens from being issued for it. Trace ID: 217b3... Correlation ID: 1a90a2da...

I don't think Apps for Enterprise or Teams Essentials comes with Yammer.... so is that the problem? I'm the admin and I definitely have NOT done anything to disable this in recent months.

SokiGuo-MSFT 23,236 Reputation points Microsoft Vendor

2023-01-18T08:52:59.08+00:00

Hi @Lee SCS

Do you have any further question on this topic now?

If the above suggestion helps, please be free to mark it as answer for helping more people.
SokiGuo-MSFT 23,236 Reputation points Microsoft Vendor

2023-01-20T08:37:16.3433333+00:00
Hi @Lee SCS

Prerequisites for enabling Teams Q&A:

Verify that you haven’t blocked access to Yammer’s IPs and URLs.

To allow users in your organization to add Q&A to Teams meetings, you need to confirm that sign-ins for the Office 365 Yammer service are enabled in Azure Active Directory. Follow the steps below to confirm that sign-ins are enabled:

Go to the Azure AD admin center > All services > Enterprise Applications > Office 365 Yammer > Properties.

For the Enabled for users to sign-in? option, select Yes if necessary.

Verify that you haven’t blocked the Q&A (Native) app in Teams app.

For more details about Teams Q&A, you could refer to this article.
SokiGuo-MSFT 23,236 Reputation points Microsoft Vendor

2023-01-20T08:41:45.7433333+00:00

Hi

we will check it later. I'll post here if there are any updates.
Lee SCS 5 Reputation points

2023-02-01T07:42:26.8+00:00
I'm not sure where I should go. I typically manage the settings through the "Microsoft 365 admin center". I've tried to deduce where to go in that - this is what I've done:

Login to Microsoft 365 Admin Center

Click "Show all"

Click "Azure Active Directo..."

A new tab opens calling itself "Microsoft Entra admin center" - NOT Azure AD admin center.

I DO NOT see "All services", even after I click "Show more", however, I DO see "Applications"

I click "Applications" and that expands to show "Enterprise applications" and "App registrations"

I click "Enterprise applications" but there is no option for "Office 365 Yammer" and thus, I cannot pull up properties on that.

REMINDER: We have an Office365 Apps for Enterprise licenses - We DO NOT use any plan that includes Exchange (or Yammer.
SokiGuo-MSFT 23,236 Reputation points Microsoft Vendor

2023-02-01T08:02:09.66+00:00

Hi

Based on your screenshot, you only enabled Q&A through the meeting option. After my research, this error code is generally a team login issue. Please switch to Teams web client with a stable internet connection to see if the problem exists. Also, follow the best practices for setting up Q&A in this article to see if it works.
SokiGuo-MSFT 23,236 Reputation points Microsoft Vendor

2023-02-08T05:53:07.5933333+00:00

Hi

I haven't seen your reply for a long time. Any more questions?
Lusifer Demon 0 Reputation points

2024-02-12T20:24:41.7+00:00

Welcome . I have the same problem and I cannot add the account to the computer. I logged in from the browser, but I never found my files. Please very please help me😭😭😭
Lusifer Demon 0 Reputation points

2024-02-12T20:28:30.4066667+00:00

Welcome . I have the same problem and I cannot add the account to the computer. I logged in from the browser, but I never found my files. Please very please help me

1 answer

Mik Op 136 Reputation points

2023-08-03T08:23:18.1666667+00:00

Yeah, funny when it advises to talk to your IT admin, when you are the IT admin :)

Fortunately, obligatory unistall and install solved the issue.
Please sign in to rate this answer.
Lusifer Demon 0 Reputation points

2024-02-12T20:25:22.1066667+00:00

same here > how can i fix my account?
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