Environment:
- Microsoft Copilot Studio
- Microsoft Teams
- Generative AI orchestration enabled
Problem:
Our agent works correctly in:
- Test pane
- Regular Teams chats
However, all conversations initiated from Teams Meeting Chat fail immediately with:
"Sorry, something unexpected happened.
Error code: SystemError"
Observations:
- Session IDs from failing conversations are in the format:
19:meeting_*@thread.v2
- Analytics shows:
SessionOutcome = Unengaged
TopicName = blank
TopicId = blank
OutcomeReason = NoError
- The issue occurs even with a minimal test prompt ("hello").
- The issue occurs before any topic is triggered.
- Connection references are configured correctly.
- Flows are not executed.
Reproduction:
1. Create or join a Teams meeting.
2. Add the Copilot Studio agent to the meeting chat.
3. Send any message (e.g. "hello").
4. Agent returns SystemError.
Additional validation:
- Test Pane works correctly.
- Regular Teams chat works correctly.
- Meeting Chat fails consistently.
- Analytics indicates failure before topic routing.
Request:
Please investigate whether there is a known issue or limitation affecting Custom Copilot Studio Agents in Teams Meeting Chat context.
