Repeated Connection Prompts and "Send Failed. Retry" Errors When Using SharePoint Lists in Copilot

Hi everyone,

I'm working on integrating SharePoint lists as a knowledge source in a Copilot agent. The setup works initially, but I'm encountering persistent issues when testing the agent or accessing it via Microsoft Teams/SharePoint site after publishing.

Issue Details:

• Initial Connection Prompt: When I first test the agent or access it from Teams/Site, it prompts me to connect to the SharePoint data source. This is expected and works fine.
• Repeated Prompts: After the initial connection, the agent repeatedly asks me to reconnect to the SharePoint list, even within the same session. This happens multiple times during a single conversation.
• Error Message: Frequently, I receive the error message:
  "Send failed. Retry"
  This disrupts the conversation and makes the agent unreliable for end users. After 2-3 retry it worked
• Expected Behavior: I expect the connection to persist once authenticated, and for the agent to access the SharePoint list seamlessly throughout the session.

What I’ve Tried:

• Verified that the SharePoint list is correctly configured and accessible.
• Ensured that the data source connection is added and published in the Copilot Studio.
• Tested in both the Copilot Studio test environment and Microsoft Teams and its working fine on Copilot Studio test environment.

Questions:

1. Is this a known issue with SharePoint list integration in Copilot agents?
2. Are there any best practices to ensure persistent authentication or session handling?
3. Could this be related to Teams-specific permissions or token expiration?
4. Any workarounds or configuration changes that could help resolve this?

Any help or guidance would be greatly appreciated!

Thanks in advance.