Not able to login to Domain Account . 18.10. Login loop

I have added Ubuntu machine to windows AD. It fetched the user details from the AD successfully. However, from the login screen after the username and password has been typed correctly, it seems to login to the profile, but instead gets back to the login screen, where the user lists are been shown. I am using version 18.10 . I have already tried few steps which I could find from internet, but none of them worked till now. PLease help.