As of Friday, our approval flows now re-direct to the web browser (webpage) for approval, rather than being actionable in the e-mail (both in desktop client and OWA). We have changed nothing. Even the Markdown formatting in our approval e-mail broke (again, last modified date on the Flow is months ago). I checked our ExchangeOnline config:
Get-OrganizationConfig | ft ConnectorsActionableMessagesEnabled,SmtpActionableMessagesEnabled
And both are set to True. I'm not sure what went wrong. New approval e-mails I test creating are doing the same thing. I tried setting them to $false then back to $true, same issue.
I used the Actionable Messages Debugger tool which shows the below error:
Adaptive card signature validation failed - Failed to validate signature
But I'm not designing my own card/adaptive card, I'm using the basic out-of-the-box Approve/Reject Flow.
just to add, users have also noticed that all previous Approval emails now show the option to Approve/Reject, instead of stating that they have already been dealt with
I also have a ticket open with through Power Platform support a week ago, but am expecting pretty much the same a slow investigation.
They (Microsoft) know they messed it up, it'd just be nice if they told us. They've conveniently added this to the messages, which leads to useless information with no solution.
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