Ian Grieve reaches first sign on in his series about Implementing Fastpath’s Config AD: First Login With Single Sign-On
Implementing Fastpath’s Config AD: First Login With Single Sign-On | azurecurve
Install, Upgrade & AdminMicrosoft & the GP Ecosystem
Archived post from 2014. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.