If you validate for the SharePoint connection on a Lasernet Connector version prior to 6.18.3 and are on 10.0.32 PU56 or higher, you will receive the following exception: 

The DLL Microsoft.Dynamics.Platform.Integration.SharePoint was updated as part of version 10.0.32 PU56. 

One of the changes made by Microsoft is the input parameter for the function  AddAuthentication in RestProxyBase (SharePointProxy) from  HttpWebRequest to IHttpExecutorRequest. 

Solution

Dynamics 365 Finance & Operations users on version 10.0.32 PU56 or later, who are using SharePoint with the Lasernet Connector, please upgrade to Lasernet Connector version 6.18.3.