You can create connections to Dynamics 365 (CRM 2016 etc) without using the LINQPad CRM Driver.

1. Create a new query
2. Select Query | References and Properties from the menu (F4)
3. Add the following references to the Query Properties
4. 
5. If you have an assembly with Early Bound entities you can also add it here.
6. Open the Additional Namespace Imports tab and select the following namespaces. Include any Early Bound entity namespaces here too.
7. 
8. Enter the following code into LINQPad to make your connection and generate your queries.
9. The Util.GetPassword is the LINQPad utility method for retrieving a password encrypted in the LINQPad Password Manager.

void Main()
{
 string url = "https://mycompany.crm6.dynamics.com"; 
 string username = "mycompany.user@mycompany.onmicrosoft.com";
 string password = Util.GetPassword("d365-crmadmin");
 
 CrmServiceClient conn = new CrmServiceClient($"Url={url};Username={username};Password={password}; AuthType=Office365");

conn.OrganizationServiceProxy.Timeout = new System.TimeSpan(0, 3, 0);
 
 conn.OrganizationServiceProxy.EnableProxyTypes();
 
 IOrganizationService orgService = conn.OrganizationWebProxyClient != null ? (IOrganizationService)conn.OrganizationWebProxyClient : (IOrganizationService)conn.OrganizationServiceProxy;

Context = new XrmServiceContext(orgService);

// Write your queries as normal
 // var myQuery = from a in Context.AccountSet where ....
}

public XrmServiceContext Context { get; set; }