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Supply chain | Supply Chain Management, Commerce
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Outlook integration to Finance and Operations. Error: "Could not communicate with Microsoft Outlook"

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Posted on by 214

Hello all,

I'm facing some issues when trying to follow the tutorial in this web page: http://d365tour.com/en/microsoft-dynamics-d365o/synchronization-contacts-outlook/ .

When trying to run the Microsoft Outlook setup wizard in Microsoft Dynamics 365 Finance and Operations Common module, I get a couple errors:

"The remote server returned an error. (401) Unauthorized."

"Could not communicate with Microsoft Outlook client."

Now, the Outlook is installed together with the whole Microsoft Office 365 package, and is open during the setup wizard as the tutorial suggests. It seems, that Microsoft Dynamics still cannot see the Outlook client, which, my best guess, result in the first unauthorized error. Does anybody have any experience with Outlook integration into Microsoft Dynamics 365 Finance and Operations and could point me in the right direction where the problem occurs and what possible solutions are for it. Thanks a lot!

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  • André Arnaud de Calavon Profile Picture
    303,691 Super User 2026 Season 1 on at

    Hi Victor,

    The blog post is assuming you do connect with Office 365 Outlook. As Dynamics 365 is a web application, it can't talk directly to programs running locally on your computer. Your Outlook client will also connect with Office 365.

  • Suggested answer
    RM-22040759-0 Profile Picture
    2,014 on at

    Hi Victor,

    There are few suggestions which can help you in resolve the subjected issue.

    Pls, review this link: support.microsoft.com/.../401-unauthorized-exception-occurs-in-dynamics-365-when-using-server-si

    Best Regards,

    Ravi Theja Madisetty

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