Symantec DLP AD Authentication not working

Hello .  I am trying to configure AD authentication with DLP but its not working. Enforce is on windows.

I have configured krb file and put into it the right parameters . Have created the same users in Enforce and AD ( case sensitive in AD and enforce) and they are also assigned to a role. I can succuesfully kinit meaning it does not give me any error when i do Kinnit username password from the cmd

But when I try to login it gives me the error of invalid username and password. Please tell me how to fix this.