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Power Platform Community / Forums / Power Automate / Adaptive Card signatur...
Power Automate
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Adaptive Card signature validation failed

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Posted on by Microsoft Employee

Hi,

I have built a flow which has a start and wait for approval action.

I have two options, approve and reject.

 

However, when I receive the approval email I am not getting an actionable email. Instead when clicking either the approve or reject button I am getting taken to the Power Automate site to approve.
We are using Outlook 0365. Build 2006 13001.20520 (Click to run)

I installed the actionable messages debugger and got the following message when opening the approval email sent from Flow:


"Adaptive card signature validation failed - recipient does not match."

Is there some security or/and other setting in admin center that needs turning on, box ticked?

 

 

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  • Javier Gallego Profile Picture
    Microsoft Employee on at

    Hi Darren1372, 

     

    Could you check this thread to see if it can help you?

     

    https://powerusers.microsoft.com/t5/Building-Flows/Adaptive-cards-not-working-in-email-message/td-p/330992

     

    Thanks,

    Javier

  • JimCason Profile Picture
    2 on at

    Darren - Did you get this issue resolved? I am getting the same message in Outlook, but it is working in OWA.

  • Bernard1 Profile Picture
    6 on at

    Darren1372, did you ever get this working? I'm encountering a similar issue when sending an approval email to an external domain. Adaptive card signature validation failed - recipient does not match. Hoping to get actionable email working for this approval flow process. It does work with internal domain email addresses. Thanks!

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