Note: This is an old article. However, the troubleshooting tips may still apply to newer versions.
You receive the following error when connecting to CRM online using the CRM adapter:
Value cannot be null. Parameter name: authenticationCredentials.SupportingCredentials
Replace the local discovery service URL (ie company.crm.dynamics.com) with the generic CRM discovery service. The following is the list of CRM discovery server URLs.
|Location||Discovery Service URL|