Dynamics CRM 2016 and ADFS = unable access to metadataendpoint.svc

Hello,

we have deployed the Dynamcis CRM 2016. We use ADFS for internet access.

Now we would like to enable SERVER to SERVER integration with Sharepoint 2016.

If we try to access:

https://<server name>/XrmServices/2015/metadataendpoint.svc/json?orgName=<orgname>

we recieve error.

If I try the url in browse I receive an error page: REQUEST ERROR - The server encountered an error while processing your request. See server logs for more details.

In the server log I have some error in IIS log with code 302 and one (just one for many request we have tried) in the Event viewer with endpoint not found.

Lorenzo