Does SharePoint 2016 support SAML 2.0
There may be some confusion, looking at all the public documentation for SharePoint, in regard to exactly what is and isn’t supported in terms of SAML tokens. This article https://technet.microsoft.com/en-us/library/cc262350(v=office.16).aspx#plansaml states the following: SAML token-based authentication SAML token-based authentication in SharePoint Server 2016 uses the SAML 1.1 protocol and the WS-Federation Passive Requestor Profile (WS-F PRP).
SharePoint Management Shell- List out all authentication Providers for each zone in each web Application in your farm
You may find yourself hunting for the SharePoint Web application and looking through each authentication zone to find the ones associated with a certain Auth Provider. This can happen if you’ve ever tried removing a claims authentication provider, but the error indicates that it is associated with one or more web applications. The following script