kinit: Pre-authentication failed: Invalid argument while getting initial credentials

Issue

• ktutil generated Keytab not able to authenticate using kinit command

# ktutil
ktutil:  addent -password -p testuser@EXAMPLE.COM -k 2 -e aes256-cts-hmac-sha1-96 -s "EXAMPLE.COMtestuser", params ""
ktutil:  wkt /tmp/testuser.keytab
ktutil:  quit

# klist -kte /tmp/testuser.keytab
Keytab name: FILE:/tmp/testuser.keytab
KVNO Timestamp           Principal
---- ------------------- ----------------------------------------------
   2 09/12/2024 11:22:06 testuser@EXAMPLE.COM (aes256-cts-hmac-sha1-96)
   2 09/12/2024 11:27:41 testuser@EXAMPLE.COM (aes256-cts-hmac-sha1-96)
   2 09/12/2024 11:38:39 testuser@EXAMPLE.COM (aes128-cts-hmac-sha1-96)
   2 09/12/2024 11:54:49 testuser@EXAMPLE.COM (aes256-cts-hmac-sha1-96)

# kinit -k -t /tmp/testuser.keytab testuser@EXAMPLE.COM -V
Using new cache: 0:37119
Using principal: testuser@EXAMPLE.COM
Using keytab: testuser.keytab
kinit: Pre-authentication failed: Invalid argument while getting initial credentials

• However, when executing normal Kinit works well

# kinit testuser@EXAMPLE.COM -V
Using new cache: 0:86172
Using principal: testuser@EXAMPLE.COM
Password for testuser@EXAMPLE.COM:
Authenticated to Kerberos v5