Admin enabled multifactor authentication and now my flow broke

[DanielRK]

Hi,

I'm getting the following error in this step of my flow:

"Post your own adaptive card as the FlowBot to a user"- 

{

  "error": {

    "code": "AuthorizationFailed",

    "message": "A client certificate or authorization header was not provided."

  }

}

{

  "Pragma": "no-cache",

  "x-ms-request-id": "westeurope:33995e2d-545e-4ec6-af30-20b4f2cb6276",

  "x-ms-correlation-request-id": "33995e2d-545e-4ec6-af30-20b4f2cb6276",

  "x-ms-flow-mobile-ios-version": "1.3.0",

  "x-ms-flow-routing-request-id": "WESTEUROPE:20210302T094803Z:33995e2d-545e-4ec6-af30-20b4f2cb6276",

  "Strict-Transport-Security": "max-age=31536000; includeSubDomains",

  "X-Content-Type-Options": "nosniff",

  "Timing-Allow-Origin": "*",

  "x-ms-apihub-cached-response": "false",

  "Cache-Control": "no-cache",

  "Date": "Tue, 02 Mar 2021 09:48:03 GMT",

  "Content-Length": "140",

  "Content-Type": "application/json",

  "Expires": "-1"

}

Error code: 401

How do I fix this?

Thanks,

Daniel

[manuelstgomes · Accepted solution]

Hi @DanielRK 

This happens frequently. The connection was invalidated. You need to reconnect by creating a new connection and adding it to your Flow or fixing the current one. 

When you try to do the new connection you'll be asked for the MFA and this will solve the issue.

Can you please check if and let me know if you have any questions?

Cheers
Manuel

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[DanielRK]

Thank you @manuelstgomes !

[DanielRK]

Hi @manuelstgomes ,

MFA was removed but the issue has come up again. Can you explain how to fix an existing connection where I'll be asked to MFA?

Our users are downloading the Microsoft authenticator app and using that to sign into their office.com and email accounts. I'm not sure how if this will break the flow each time it tries to run?

Is there any documentation on how to handle this issue?

Thank you again.

Regards,

Daniel 

[manuelstgomes]

Hi @DanielRK 

There are two ways to refresh the connection. If you want it only for your Flow, then you can add a new connection, and you'll be prompted for the MFA.

Otherwise, the best way is to go to "Data" > "Connections," and then probably you'll see something like this:

Fix the connection, and you'll be prompted for the MFA.

Can you please try and let me know if it works?

Cheers
Manuel

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[DanielRK]

Hi @manuelstgomes ,

Thanks for your help on this.

My problem is that the connections are breaking as such.

I have other users trigger my flow from a powerapp and those users that have MFA enabled are experiencing flow failures. When I log into my flow I don't see any broken connections.

I never shared the flow with the users for security reasons. Do those users need to go into Power Automate and fix their connections?

Regards,

Daniel

[manuelstgomes]

HI @DanielRK 

Unfortunately yes. They will have their own connections, and if something changes in the tenant, it will affect everyone.

Even if the connection is not invalid, I'm almost sure that your issues come from that.

As a test, create a new connection and change it in one Flow. If it solves your issue, then we have a working connection. If not, then we need to dig further.

Cheers
Manuel

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[DanielRK]

Hi @manuelstgomes ,

Thank you for your help on this. Will give it a try.

Regards,

Daniel