Ansible Kerberos Cannot contact any KDC for realm

[sindhu shree]

Can anyone guide me why am getting this error ? 

UNREACHABLE! => {

    "changed": false,

    "msg": "Kerberos auth failure: kinit: Cannot contact any KDC for realm 'AD.DOMAIN.COM' while getting initial credentials",

    "unreachable": true

}

My inventory and krb5.conf files looks like this

Hosts:

[win]

pc1.ad.domain.com

#10.217.25.246

[win:vars]

ansible_user=us...@AD.DOMAIN.COM

ansible_password=Welcome$123

ansible_connection= winrm

ansible_winrm_transport= kerberos

ansible_winrm_server_cert_validation=ignore

/etc/krb5.conf.d/ :

# Configuration snippets may be placed in this directory as well

includedir /etc/krb5.conf.d/

[logging]

 default = FILE:/var/log/krb5libs.log

 kdc = FILE:/var/log/krb5kdc.log

 admin_server = FILE:/var/log/kadmind.log

[libdefaults]

 dns_lookup_realm = true

 ticket_lifetime = 24h

 renew_lifetime = 7d

 forwardable = true

 rdns = false

 dns_lookup_kdc = true

 pkinit_anchors = /etc/pki/tls/certs/ca-bundle.crt

 default_realm = AD.DOMAIN.COM

 default_ccache_name = KEYRING:persistent:%{uid}

[realms]

    AD.DOMAIN.COM = {

        kdc = pc1.ad.domain.com

        default_server = ad.infosys.com

    }

[domain_realm]

    .ad.domain.com = AD.DOMAIN.COM

    ad.domain.com = AD.DOMAIN.COM