Error in the Teams connector

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Posted on by TS-16121334-0

I've recently started getting this error in Power Automate. The same thing happens in Outlook.
What's suddenly going wrong? I've already reconnected three times, so that's not the problem.

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rzaneti 4,263 Super User 2025 Season 2 on at

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Hi @TS-16121334-0,

According to the error message, there is an error in you connection. Please check the credentials used for the Teams connector, and if everything looks good, try to re-authenticate it.

If it still doesn't work, are you experiencing the same issue in other flows?

Let me know if it works for you or if you need any additional help!

✅ If this solved your issue, please mark it as Accepted Answer.
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TS-16121334-0 6 on at

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"I have already reconnected and logged in three times. The issue persists in this specific flow and its counterpart (one in Sandbox, one in Production).

Interestingly, if I create a completely new flow, I can use the connectors without any issues. It seems to be isolated to these two particular flows.

While this isn't a showstopper for my current work, I would really like to inform my colleagues via the flow whether it ran successfully or, if not, what information was missing.

Should I consider rebuilding the flow from scratch to resolve this?"

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Riyaz_riz11 3,893 Super User 2025 Season 2 on at

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Hi,

The error means the Flow/Outlook action cannot get a valid token because your account or bot is missing required permissions for that target Teams/Outlook.
Open the flow, go to “Connections” and check every connection reference used in the “Post card in a chat or channel” and related actions;
If you post as “Flow bot” to a private or shared channel, try switching “Post as” from Flow bot to User and ensure that user is a member of that channel/team.
ask your tenant admin to confirm that the affected connectors Teams or Outlook are allowed in Data Policies and that no recent security change removed your permission or broke managed connections.
If nothing helps, create a brand‑new solution flow, add fresh Teams or Outlook connections, and test in a standard channel or your own mailbox to rule out environment or channel

If I have answered your question, please mark it as the preferred solution ✅ . If you like my response, please give it a Thumbs Up 👍.
Regards,
Riyaz

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TS-16121334-0 6 on at

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"I have moved the flow into a solution, and what can I say—it works perfectly now!

Thanks everyone for your help!"

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