We can not login to Api Server with active directory

Hello,

We can login Api Server with an identity , on the other hands we have been trying to login Api Server with acitve directory , but we couldn't. We have an active directory releated identity. We don't think that there is a problem fot active directory side.Is thre any configuration setting to login api server with active directory on designer or web portal administrator packages. By the way we have examined configuration page of web portal administrator or  security setting in designer.

Best regards,
Omer Dagdeviren.