Microsoft Dynamics CRM (Archived)

Outlook Client - The caller was not authenticated by the service

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Posted on by Rolando Sacramento

Hi Experts,

May I know if you encountered the error below and how did you resolve it?

It is generated by 'Outlook plugin' when we tried connecting to an organization.

Version: Dynamics CRM 2016 Update 1 - On-Premise

07:09:28| Info| Error connecting to URL: test/.../Discovery.svc Exception: System.ServiceModel.Security.SecurityNegotiationException: The caller was not authenticated by the service. ---> System.ServiceModel.FaultException: The request for security token could not be satisfied because authentication failed.
at System.ServiceModel.Security.SecurityUtils.ThrowIfNegotiationFault(Message message, EndpointAddress target)
at System.ServiceModel.Security.SspiNegotiationTokenProvider.GetNextOutgoingMessageBody(Message incomingMessage, SspiNegotiationTokenProviderState

Any advice please?

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prt33k 6,907 on at

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RE: Outlook Client - The caller was not authenticated by the service

Ah...

VPN does have connectivity issue - please use below to configure the port etc

blogs.technet.microsoft.com/.../ports-to-be-opened-for-configuring-crm-outlook-client-over-vpn

Thanks,

Prateek
Rolando Sacramento 5 on at

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RE: Outlook Client - The caller was not authenticated by the service

Hi Prateek,

The machine is operating within the VPN.
prt33k 6,907 on at

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RE: Outlook Client - The caller was not authenticated by the service

Hi Rolando,

Are the client machine joined to the domain? Or are you having IFD?

These are prerequisite to get outlook plugin work in a on-prem env.

Thanks,

Prateek