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Message "User (C2) connections must use Azure Active Directory authentication" on Publish

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Posted on by Adriano Silveira

For a few days now, I've been unable to publish my Copilot Studio agents that use Power Automate flows. This only happens to agents that don't use/use authentication.
I get the error:

[
{
"diagnosticResult": [
{
"$kind": "ElementValidationError",
"errorCode": "UserConnectionRequiresAuthentication",
"errorMessage": "User (C2) connections must use Azure Active Directory authentication."
}
],
"componentDisplayName": "Test",
"componentId": "e0f45144-db76-483a-8a95-362b5d8e6eea",
"diagnosticErrorCount": 1
}
]

Notes:
. The issue only occurs when authentication isn't used.
. The issue occurs when invoking any Power Automate flow from Copilot Studio.
. The problem occurs in any topic (not just "conversation improvement").
. I tested flows with and without parameters.
. I tested with existing agents and creating new ones.
. I also created a new flow that does nothing and doesn't receive parameters. Still, the problem persists.

In short: publishing from any agent only works if authentication is present, or if it isn't, the agent can't use any Power Automate flows.

Categories:

General topics

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Michael E. Gernaey 53,493 Super User 2025 Season 2 on at

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HI @Adriano Silveira

What is your configuration for the flows and tools/agent flows as it relates to authentication?

Maker-provided credentials?

End-User credentials?

Re-Only settings?

User authentication settings?

Depending on these it will impact as if the Agent / Tool settings and or the Flow requires authentication then its going to require it, which is most of the time.

If these suggestions help resolve your issue, Please consider Marking the answer as such and also maybe a like.

Thank you!
Sincerely, Michael Gernaey

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Adriano Silveira 21 on at

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The copilot agent does not perform authentication (it is public). It invokes flows from Power Automate. As a test, I created a new flow that does nothing, it only receives the agent's request and responds. Even so, the error in publishing the agent occurs. Until last week it did not happen. There was no change in the agent. I imagine it could be some issue/bug in the Power Platform.

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SARFARAZ AHMED MUFTI 19 on at

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I have been facing the same issue when publishing my bot agent.

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Verified answer

SARFARAZ AHMED MUFTI 19 on at

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MS will provide a fix on this.

Known issue:
https://admin.powerplatform.microsoft.com/support?serviceHealthId=PP1151711#service-health
MS Current Status: Our investigation has identified that a recent service update introduced a code regression, which inadvertently marks valid agents as invalid, resulting in impact. We are preparing a fix that will be applied to the impacted infrastructure to mitigate the issue, following successful validations.

4 people found this reply helpful.

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Adriano Silveira 21 on at

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Thank you, SARFARAZ AHMED MUFTI.

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SARFARAZ AHMED MUFTI 19 on at

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The MS issue has been fixed.

The bot is now published.

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CU17091415-0 4 on at

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This issue is related to Power automate flow, In power automate flow you will have one option 'Run-only user' then click on edit, in that check for connections used default option will be Provided by run-only user... Change that to the use this connection. Once it is saved refresh and try to publish.

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