[Samba] dns_tkey_gssnegotiate: TKEY is unacceptable

[Robert E. Wooden]

As the subject says, dns_tkey_gssnegotiate: TKEY is unacceptable.

I have internet searched for solutions.

I have done everything on 
/wiki.samba.org/index.php/Dns_tkey_negotiategss:_TKEY_is_unacceptable/ 
and I am still getting:

At the end of "root at dc01:~# samba_dnsupdate --verbose --all-names":

dns_tkey_gssnegotiate: TKEY is unacceptable
Failed nsupdate: 1
Failed update of 29 entries

root at dc01:~# klist -k -K -t /var/lib/samba/private/dns.keytab
Keytab name: FILE:/var/lib/samba/private/dns.keytab
KVNO Timestamp           Principal
---- ------------------- 
------------------------------------------------------
    1 07/03/2020 06:21:27 
DNS/dc01.ad.SAMDOM.EXAMPLE.COM at AD.SAMDOM.EXAMPLE.COM 
(0xa73c4ef2b574933b34c306b0f32b3527)
    1 07/03/2020 06:19:53 dns-dc01 at AD.SAMDOM.EXAMPLE.COM 
(0xa73c4ef2b574933b34c306b0f32b3527)
    1 07/03/2020 06:19:53 
DNS/dc01.ad.SAMDOM.EXAMPLE.COM at AD.SAMDOM.EXAMPLE.COM 
(0xd316c15e931088a01b5af8d4ebfab30f)
    1 07/03/2020 06:19:53 dns-dc01 at AD.SAMDOM.EXAMPLE.COM 
(0xd316c15e931088a01b5af8d4ebfab30f)
    1 07/03/2020 06:19:53 
DNS/dc01.ad.SAMDOM.EXAMPLE.COM at AD.SAMDOM.EXAMPLE.COM 
(0x7c8d8611291fe04e69e1007fd5f395166d920f8434a260fe79eb5f938deb3421)
    1 07/03/2020 06:19:53 dns-dc01 at AD.SAMDOM.EXAMPLE.COM 
(0x7c8d8611291fe04e69e1007fd5f395166d920f8434a260fe79eb5f938deb3421)

root at dc01:~# ls -alh /var/lib/samba/private/dns.keytab
-rw-r----- 2 root bind 508 Jul  3 06:21 /var/lib/samba/private/dns.keytab

The keytab exists. I have delete and re-generated it twice. And I am 
still receiving  errors.

root at dc01:~# cat /etc/resolv.conf
nameserver 127.0.0.1
nameserver 192.168.16.52
search ad.samdom.example.com

Any suggestions would be greatly appreciated?

-- 
Bob Wooden