Power Platform Community Forum Thread Details

Getting error message: "failed to validate the signature of the actionable message card." on actionable emails

I am trying to click on a button on an actionable email and getting the error: "failed to validate the signature of the actionable message card."
This error started appearing suddenly. No changes were made to the code and it has been working fine. But I'm getting this error message in every actionable email now.

Can someone please help with what might be causing this issue or how to fix it?

Categories:

General topics

Seems like this is a known issue and Microsoft is aware/working on a fix.

Microsoft 365 Alert – Service Degradation – Microsoft Power Automate in Microsoft 365 – Failures when rejecting or approving Microsoft Power Automate email approvals – NEW

27/12/2022 16:55:00 PM (GMT)

NHSmail Reference : INC33503238

Microsoft Reference : MF491924

Issue Status : OPEN

Issue Description : Failures when rejecting or approving Microsoft Power Automate email approvals.

More info : Users may receive an error stating “Failed to validate the signature of the actionable message card,” when attempting to approve or reject an email approval. Approvals can still be approved or rejected via Maker portal or Power Automate for Teams.

Scope of impact : Your organization is affected by this event, and any user attempting to approve or reject email approvals may be impacted.

Current Update : 27/12/2022 16:55:00 PM – Microsoft has confirmed that a network authentication component misconfiguration is inadvertently resulting in users being unable to approve or reject Microsoft Power Automate email approvals. They are developing a fix to correct the configuration and remediate impact.