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Power Platform Community / Forums / Power Automate / Outlook HTTP POST Toke...
Power Automate
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Outlook HTTP POST Token connection blocking

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Hello,
I am developing a new flow (run from a connected canvas app) that is designed to create a draft email in the end user's Outlook account. The trouble I am having is that initially, for every user we have tested with so far, the flow will initially throw up an error reading "Runtime call was blocked because connection has error status: Enabled| Error, and office365 is in the block list."
I understand that this is a token issue, and the issue is resolved for a given user if that user goes into make.powerapps.com and refreshes their Outlook connection.  After doing so, the flow behaves exactly as expected and will generate the email exactly as desired. However, every time a new user attempts to access the flow via the app, the flow fails with the same error as previously. This is obviously not a tenable situation, as we are routinely adding and removing users from the application... Can anyone advise as to how we can more permanently resolve this issue? If it's relevant, the flow and app are owned by a service account rather than any one user's personal account.
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