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Copilot Studio agent does not respond in a Teams channel (but works properly in Test pane)

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Posted on by HB-09041311-0

Hi Community,

I'm facing an issue with a Copilot Studio agent that has been published to the Microsoft Teams channel. The agent works perfectly in the Copilot Studio Test Pane, but when users interact with it in Teams, it does not respond at all. There is no error message, and no conversation session appears to start.

Environment

Microsoft Copilot Studio
Agent published to the Teams channel
Agent shared with specific users / a security group (not organization-wide)
Knowledge source: Dataverse tables
Authentication: Authenticate with Microsoft
Tested in both Teams Desktop and Teams Web
Agent status: Published

Note: I currently do not have access to the Teams Admin Center or Microsoft 365 Admin Center to validate tenant-level settings.

Expected Behavior

Users should be able to ask questions in Teams and receive responses from the agent, just as they do in the Copilot Studio Test Pane.

Actual Behavior

Users can successfully find and install the agent in Teams.
Messages sent to the agent receive no response at all.
No error message is displayed.
No conversation session appears in the Copilot Studio activity/transcript history.
It almost seems as though the message never reaches the agent.

What Works

✅ Agent responds correctly in the Copilot Studio Test Pane
✅ Agent publishes successfully
✅ Agent installs in Teams without errors

What I Have Already Checked

Agent is published and republished after every change.
Tested in Teams Web to rule out desktop client caching issues.
Signed out and back into Teams after configuration changes.
Removed and reinstalled the agent after republishing.
Confirmed that the affected users have access to the agent.

What I Cannot Verify

Since I do not have Teams/M365 admin access, I cannot validate:

Teams Admin Center → Manage Apps
- Whether the custom agent/app is Allowed or Blocked
Any app permission policies
Any app setup policies

Questions

Is there a way to determine whether messages from Teams are actually reaching the Copilot Studio agent?
Besides Teams app policies, are there any other configuration areas that commonly cause this behavior?
Has anyone encountered a situation where:
- The agent works in the Test Pane
- Users can install it in Teams
- But no response is returned and no transcript is generated?

Any suggestions or troubleshooting guidance would be greatly appreciated.

Thanks in advance!

Categories:

Building Copilot Studio chatbots in Microsoft Teams

Publish & channel management

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Pstork1 69,657 Most Valuable Professional on at

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You mention using Dataverse as a data source. How did you configure the security on the Dataverse Table? Do all the users have a role that grants them permission to see the data being used by the agent? Does the agent work for you in Teams, but not anyone else or does it not work if you install it either.

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Mohsin Ali 467 on at

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To answer your questions.

Is there a way to determine whether messages from Teams are actually reaching the Copilot Studio agent?
If the Teams message is successfully reaching the Copilot Studio agent, I would expect to see corresponding activity/session information under the Activity tab in Copilot Studio.
Since you are not seeing any activity or transcript when the message is sent from Teams, this suggests that the message may not be reaching the agent at all. I would therefore focus the initial troubleshooting on the Teams-to-Copilot Studio connection/channel rather than the conversation logic itself.

Besides Teams app policies, are there any other configuration areas that commonly cause this behavior?
I would also verify the Dataverse security roles assigned to the affected users. Since the agent is interacting with Dataverse tables, make sure the users have the required permissions for the tables being accessed.
One useful comparison would be to test with a System Administrator or another user with broader Dataverse permissions. If the agent works for that user but not for the affected users, it would help narrow the issue down to security/permissions.
Since the agent works correctly in the Test Pane but Teams produces neither a response nor an activity/transcript, I would first try to establish whether this is a Teams channel/integration issue or a user-specific permissions issue.

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11manish 4,137 Super User 2026 Season 2 on at

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Yes. Based on the symptoms you described, I would not focus on the Dataverse knowledge source first. The strongest clue is:

The agent works in the Test Pane, but Teams users get no response and no Copilot Studio session/transcript is created.

That suggests the request may be failing before it reaches the Copilot Studio runtime. In other words, this is more likely a Teams/channel/authentication/tenant-policy issue than an agent-topic or Dataverse issue.

First establish whether Teams messages are reaching Copilot Studio. If they are not, focus on Teams, Entra ID, Conditional Access, and tenant configuration rather than rebuilding the agent.

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HB-09041311-0 45 on at

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@Pstork1,
The agent is currently not working for anyone (including me) in the Teams channel, although it is working correctly in the Copilot Studio test pane.

@Mohsin Ali
Activity/session information is not visible under the Activity tab in Copilot Studio

@11manish
I will investigate any potential Teams/M365 Admin Center or Microsoft 365 tenant-level configuration issues and provide an update once I have more information.

Thank you everyone for the suggestions and support. I'll continue troubleshooting and share updates as I learn more.

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Haque 4,076 Super User 2026 Season 2 on at

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Hi @HB-09041311-0,

Just bit differently - can you please install the agent via Teams Apps tab (by searching for the agent name) as a personal app. If it is possible, can you please do a 1on1 chat with the agent? Let's see if it works.

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Mohsin Ali 467 on at

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I came across a few suggestions in other community discussions that may be worth trying if the Copilot agent works in the Copilot tab but does not respond in the Teams Chat tab:

Set the agent authentication to Authenticate with Microsoft.

Create an Entra security group, add the required users, and share the agent with that group using Show to my teammates and shared users with End user access.

Enable Show in Built By Your Colleagues.

In Copilot Studio, go to Settings > Channels > Microsoft Teams and confirm that personal scope is enabled.

In Teams, install the agent as a personal app, rather than only adding it as a tab.

Republish the agent after making the changes.

Allow sufficient time for the changes to propagate. Some users reported that it took several hours or even overnight before the agent started working correctly.

After waiting, remove the previous installation, sign in again, and reinstall the agent in Teams.

Avoid making multiple changes and immediately retesting. Make one change at a time and allow enough time for propagation before testing again.

These are troubleshooting steps reported by users in community discussions, so I haven't personally validated them, but they may help narrow down whether the issue is related to authentication, sharing, Teams personal chat configuration, app installation, or propagation delays.

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EC-11080729-0 4 on at

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I had the same issue as the above and I ran the gambit trying to solve it, I finally got it working today and I believe what fixed it was adding the Tool connection to reply to a Teams message. That didn't seem to be listed in any of the documentation and I'm not even fully sure that's what actually fixed it but it seems to be working now.

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HB-09041311-0 45 on at

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Thanks again to everyone for the suggestions...

I have now enabled Custom Apps from the Teams Admin Center. After doing this:

The Copilot Studio agent is now accessible and working in Microsoft 365 Copilot.

I can also see the "Added to Teams" notification under the agent availability options.

However, the agent is still not working in Microsoft Teams.

As part of troubleshooting:

Completely uninstalled the agent from Teams.

Removed the Teams channel from the agent.

Waited a few hours.

Republished the agent and added the Teams channel again.

Despite these steps, the behavior remains the same:

✅ Works in Microsoft 365 Copilot

❌ Does not work in Microsoft Teams

The same issue is being observed by other users as well, so it does not appear to be specific to my account.

Has anyone encountered a similar situation where a Copilot Studio agent works in M365 Copilot but not in Teams, even after enabling Custom Apps and republishing the agent?

Any additional troubleshooting suggestions would be greatly appreciated.

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Mohsin Ali 467 on at

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Hello @HB-09041311-0 - It seems to be an known issue, so I would recommend now to create a support ticket with Microsoft.

Please do me a favor and mark the suggestions that helped you to navigate the issue as it'll be helpful for the community members to find the suggestions.

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HB-09041311-0 45 on at

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Issue Resolved ✅

Thank you everyone for your help and suggestions.

The root cause was the Teams app permission policy. In Teams Admin Center → Teams apps → Permission policies → Global (Org-wide default), I enabled both Custom Apps settings:

Let users install and use available custom apps by default

Let users interact with custom apps in preview

After saving the policy, removed agent from Teams channel, published Copilot Studio agent and then after couple of hours added agent back to Teams channel then it started working correctly.

Hopefully this helps others who encounter the same issue. Thanks again for the support! 🙏

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