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Edited Approval Card "Unable to Reach App"

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Posted on by Clarice

I have a Power Automate flow that creates an approval from a form response and sends a card to a team's channel for approval. I have added a thumbnail image into the premade approval card of the document the user uploaded into the form and when you click on it the document opens. Now that I have edited the approval card when I try to approve or reject using the buttons on the card in teams, I get the error "Unable to reach app. Please try again." If I replace the edited card with the original generated through power automate, I don't receive the error when I approve in Teams. Any idea why this might be happening?

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SudeepGhatakNZ 14,394 Most Valuable Professional on at

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Re: Edited Approval Card "Unable to Reach App"

@Clarice

It seems like the policy settings in Microsoft Teams are preventing the use of Microsoft apps, which are necessary for responding to the Flow Card.

To resolve this:

Open the Microsoft Teams admin center.

Navigate to Teams apps > Permission policies.

Select the policy you want to modify.

Under Microsoft apps, change the setting to Allow all apps.

Click Save.

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Clarice 21 on at

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Re: Edited Approval Card "Unable to Reach App"

Hi thanks for the reply! Unfortunately, that setting is currently in place already. I know that it is allowed because when I change the card sent to the Adaptive Card that power automate produces as an output of "Create an Approval" the approvals and rejections go through to the app just fine.

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