Power Platform Community Forum Thread Details

Environment:

Copilot Studio agent with SharePoint as the primary knowledge source

Published to: Microsoft Teams (1:1) and Microsoft 365 Copilot

Authentication mode: Authenticate with Microsoft (default)

All users are licensed with Microsoft 365 Copilot

Agent was functioning normally until approximately April 10, 2026 - no config changes were made by our team

Issue Description:

Our Copilot Studio agent, which uses SharePoint sites as its knowledge source, has suddenly started displaying the following authentication prompt to end users in both Microsoft Teams and the Microsoft 365 Copilot interface:

"Connect to continue — I'll use your credentials to connect and to get the information you're looking for."

SharePoint

This connection can: FederatedKnowledgeSearchOperation

[Allow] [Cancel]

This prompt appears every time a user interacts with the agent and clicking "Allow" does not resolve the issue — the prompt continues to reappear in subsequent sessions or even within the same conversation.

What we've already tried:

✅ Verified agent authentication is set to "Authenticate with Microsoft"

✅ Confirmed all users have access to the SharePoint sites used as knowledge sources

✅ Checked Connection Settings in Copilot Studio — connections appear as Connected

✅ Removed and re-added the SharePoint knowledge source and republished

✅ Verified no Power Platform DLP policies were added or changed

✅ Checked for broken connections at https://make.powerautomate.com — none found

Has anyone else experienced this sudden regression with FederatedKnowledgeSearchOperation prompts appearing after a period of stable operation? Any guidance or workarounds would be greatly appreciated!