Unable to Login to Dynamics CRMOrganizationServiceProxy is null error while using CrmServiceClient

While connecting to Dynamics 365 – Version 9.0.0.0 online through a console application using Visual Studio 2015

we were getting the below error

The fix was to specify the security protocol to be Tls12 for the connection for VS 2015 and for VS 2017 make sure the framework version is 4.6 or above.

More Details – https://support.microsoft.com/en-nz/help/4051700

Hope it helps..


Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology !

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