NAV 2017 connection to Dynamics 365 (CRM) just stopped working

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Posted on by andrew_m

Hi all, not sure if anything has changed in the last day or two but our connection from NAV2017 (CU26) to Dynamics 365 online has stopped working. It's been working fine for a few years and just stopped working yesterday. The error we get when we try the 'test connection' is "Unable to login to Dynamics CRM". I have checked the login credentials and these are ok to login to CRM directly. Has anyone else had problems recently?

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Seiji Momoto 75 on at

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Hello,

I am having the exact same problem as you had. I assume that it's because of deprecation of the Regional Discovery Service [1]. I recommend that you open a service request for Microsoft, and tell them when it happened and the impact of this issue on your business.

In the case of Japan region, the integration has stopped working suddenly last week (May 27 JST). I wish I found the latest CRM SDK, but I still couldn't find a feasible solution.

Hope this helps,

[1]: docs.microsoft.com/.../important-changes-coming

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andrew_m 25 on at

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After a bit of investigation, I think it might be related to this. docs.microsoft.com/.../important-changes-coming

Looks like I may need to change from the authentication type of "Office365" to "OAuth" authentication. I am not sure how to do this though

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Seiji Momoto 75 on at

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You can try to change from "Office365" to "OAuth" in the page "CRM Connection Setup" (Page 5330)

Could you please let me know if it works for you? I tried it before and it did not work for us.

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Marco Mels on at

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Hello,

To verify the connection, you can build the connection yourself via this tool:

https://www.xrmtoolbox.com/

It is a bit of a puzzle when you do this for the first time, but after a while you should be able to figure it out. If the connection works from there, it is an issue with Dynamics 365 BC / Dynamics NAV. if XRM Toolbox connection is not able to connect either, it is an issue with CRM. Note that not all older releases of Dynamics NAV have added support for OAUTH(2) yet.

The link Andrew shared will indeed happen but does not explain why connection stopped working for an existing CRM tenant.

The way to ensure you can use OAUTH / OAUTH2 is to upgrade to later release of Dynamics 365 BC. OAUTH will also be added for older Dynamics NAV releases, but it requires you to ensure you are running latest CU so that you can easily move to the one that will have the supported added. I do not believe it is yet there, but we are working on it.

Thanks.

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Ken Pridham 15 on at

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We are having this same issue - has anyone successfully fixed this?

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karaogluilker 70 on at

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We are facing this issue with NAV 2018 version as well. We created a ticket to support and waiting for some technical solutions. If there is any improvement , i'll up to date this post.

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stbak 10 on at

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Hi there,

We are experiencing the same problem since today. Especially struggling with the connection string and different parameters such as AppID and RedirectURI. All possible values/combinations fail.
Spoke to Microsoft today but didn’t get any further yet. I hope they have an answer soon.

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JOSE IGNACIO GALAJA... 775 on at

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Maybe

https://docs.microsoft.com/es-es/dynamics365/business-central/admin-prepare-dynamics-365-for-sales-for-integration#connecting-business-central-on-premises-versions-earlier-than-version-16

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Marco Mels on at

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Good day all,

Please have a look at this blog posting. We got hit by this issue yesterday.

community.dynamics.com/.../deprecation-of-regional-discovery-service-in-msdyn365-for-sales-causes-integration-issues-with-dynamics-nav-dynamics-365-business-central

Later this afternoon we will update the blog posting with mitigation steps.

Thanks.

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Ken Pridham 15 on at

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Marco - any update on this?

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