After update my Windows 10 to creators update (1703), it's not possible to connect a server in RDP with Remote Desktop Gateway (RDG).
Before we used Windows 10 1607 and all works good.
Apparently, in this new version, Windows 10 force to use Kerberos authentification to authenticate in RDG.
But RDG doesn't support Kerberos auth, only NTLM.
It's possible to enable NTLM auth with RDG ?
Apparently, it's a change appear in the new version of Windows 10 (1703) with functionnality "Remote Credential Guard"
So it's support only Kerberos Auth and doesn't support Remote Desktop Gateway.
"Remote Desktop Gateway is not compatible with Remote Credential Guard."
But apparently, with RDP client and when I try to connect to the Remote Desktop Gateway, it's not the process mstsc it's connect to RDG but it's LSASS with try to Kerberos authentification.
Like it's explain in this article :
For example, this is a connexion from Windows 8.1 :
Authorization: NTLM xxxxxxxxxxxxxxxxxxxxxxxxxxx==
This is a connexion from Windows 10 creators update (1703) :
First connect to KDC Proxy :
And after to RDG but with auth scheme Negotiate and not NTLM :
Authorization: Negotiate xxxxxxxxxxxxxxxxxxxxxxxxxxx==