SSL VPN Client dont connect with AD users

Question

Hello All 
 
 I have configured SSL VPN remote access, i can remotely donwnload and install client with user configuration 
 But it is impossible for users added from AD to connect to the VPN. 
 I tried with a user created locally on firewall, it connects correctly to the VPN. 
 Knowing that I have correctly configured SSL VPN Client authentification method, someone has an idea of the source of the problem ? 
 
 Regards

Aditya Patel · Answer

Hi Idir, 
 If the user is new to AD then you may need to authenticate via captive portal or by using a client. This way the user will be registered onto the XG device. This is only used fo the users who are new to AD and never been authenticated on XG.

S248 · Answer

Did you add your AD servers under Authentication -> Servers? And then did you add those AD servers under Authentication -> Services -> SSL VPN Authentication Methods? 
 Under Authentication -> Servers, when you click on Test Connection, is it successful?