As part of a POC to post a message to a Copilot Studio agent hosted in Microsoft Teams from a Power Automate cloud flow, I hit this error on the very first run:
We couldn’t find your bot
The Teams action returned BadRequest and the message never made it to the chat. Here is what caused it in my case, and how I fixed it.
The setup
- The cloud flow used the Teams action
Post message in a chat or channelwithPost as: Microsoft Copilot Studio agent.
| Setting | Value |
|---|---|
| Post as | Microsoft Copilot Studio agent |
| Post in | Chat with agent |
| Agent | POC Transcription from Flow |
| Recipient | My email |
| Message | Hello World from Cloud Flow |
- Running the flow returned
BadRequest, body contained"We couldn't find your bot".
What I checked first
I went through the usual suspects before finding the real issue:
- The flow and the agent were in the same environment.
- The Teams connector in the flow was signed in with the same account that owns the agent
- The agent was published, and I could chat with it in Teams normally
- The recipient (me) had the agent installed as a personal app in Teams
All good, but the flow still failed with the same error.
The real cause: environment type
- The agent was hosted in a Developer type Dataverse environment.
- In my testing, the
Post as: Microsoft Copilot Studio agentaction does not work against an agent in a Developer environment. - I moved the agent and the flow to a Production type Dataverse environment.
What the Microsoft docs actually say
- Conversation transcripts are not written for Developer environments. See Understand downloaded conversation transcripts from Power Apps
- Proactive Teams messages require the flow and agent to be in the same environment, and the recipient must have the agent installed in Teams. See Send proactive Microsoft Teams messages
- Microsoft does not explicitly call out Developer environments as unsupported for the proactive Teams action. My finding is based on the behavior I observed
If you hit We couldn't find your bot when posting to a Copilot Studio agent from a cloud flow, check your environment type first. Move the agent and the flow to a Production or Sandbox environment
🙂
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