We are trying to update a CRM 2016 SP1 instance from SharePoint.
The Error I am getting is: The Server URL cannot be found.
The feedback from support is that CRM 2016 on premise is not yet supported. Has anyone tried to do this and what actions did you use to achieve this?
Update 184.108.40.206 of Nintex Workflow 2013 which was released on 23rd of July introduces support for Dynamic CRM 2016.
You may install it to give it a try and see if it solves your problem.