Skip to main content

Notifications

Announcements

No record found.

Customer experience | Sales, Customer Insights,...
Suggested answer

MS Outlook 2016 Client - The caller was not authenticated by the service

Posted on by 159

Hello,

Dynamics 365 On -premise

MS Outlook 2016 

Using VPN.

I am setting up MS Outlook and Dynamics 365 integration and when I try to connect  to an organization I get the following error:

Any ideas what is going on and how to resolve this issue?  Thanks.

pastedimage1614303547566v2.png

  • Suggested answer
    kunihih Profile Picture
    kunihih on at
    RE: MS Outlook 2016 Client - The caller was not authenticated by the service

    Try opening the ports as described in the following page

    Ports to be opened for configuring CRM Outlook Client over VPN | Microsoft Docs

  • Kahspot Profile Picture
    Kahspot 159 on at
    RE: MS Outlook 2016 Client - The caller was not authenticated by the service

    Hello Kunihiko,

    Sorry , forgot to mention.

    I'm using VPN.

    Thanks

  • Suggested answer
    kunihih Profile Picture
    kunihih on at
    RE: MS Outlook 2016 Client - The caller was not authenticated by the service

    Is your user account in the same domain as the Dynamics Server? Based on the error you may be running into the following limitation.

    Troubleshooting and things to know about Microsoft Dynamics 365 for Outlook | Microsoft Docs

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

December Spotlight Star - Muhammad Affan

Congratulations to a top community star!

Top 10 leaders for November!

Congratulations to our November super stars!

Tips for Writing Effective Suggested Answers

Best practices for providing successful forum answers ✍️

Leaderboard

#1
André Arnaud de Calavon Profile Picture

André Arnaud de Cal... 291,280 Super User 2024 Season 2

#2
Martin Dráb Profile Picture

Martin Dráb 230,235 Most Valuable Professional

#3
nmaenpaa Profile Picture

nmaenpaa 101,156

Leaderboard

Featured topics

Product updates

Dynamics 365 release plans