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Power Platform Community / Forums / Power Apps / REST API is not yet su...
Power Apps
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REST API is not yet supported for this mailbox.

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Posted on by Community Power Pla... Microsoft Employee

Hello,

I have a problem. I want to reserve a meeting room by Powerapps. Actually I did it using Graph API. After this action, some users can not enter to the application. When they try to open the application, they are faced with an error such as the following. What I need to do?

I guess it is related to Excange online but I hope there is a one solution way.

  • REST API is not yet supported for this mailbox. This error can occur for sandbox (test) accounts or for accounts that are on a dedicated (on-premise) mail server.

     

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I have the same question (0)
  • Verified answer
    iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    Do you have some kind of hybrid mailbox situation going on where some of your users' mailboxes are on-premise?

    The graph API relies on the user's connection to Outlook online, so if they are an on-premise mailbox then they won't have access to that

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