ADO.NET Provider for Dynamics CRM

Build 21.0.8137


The authentication scheme used. Accepted entries are Auto,OAuth,NTLM,Kerberos.

Possible Values

Auto, OAuth, NTLM, Kerberos

Data Type


Default Value



Together with Password and User, this field is used to authenticate against an on-premises Dynamics CRM 4.0 server. This property will not be used for other versions of CRM. NTLM is the default option. Use the following options to select your authentication scheme:

  • Auto: Set this to use the authentication based on the CRM version and instance. For example, the On-Premise CRM instance will try to authenticated with username/password via SPNEGO over NTLM or Kerberos; the Internet Facing Deployment CRM and Online CRM instance will use the WS-Trust authentication;
  • OAuth:Set this to use the OAuth authentication with ADFS Server or Azure AD, work with Internet Facing Deployment and CRM Online.
  • NTLM: Set this to use the SPNEGO over NTLM authentication on CRM On-Premise deployment.
  • Kerberos: Set this to use the SPNEGO over Kerberos authentication on CRM On-Premise deployment.

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Build 21.0.8137