We have the following problem with connecting from the tomcat environment 9.024 
with the Active Directory of Windows, Kerberos database. (win2008 DC's)
In Tomcat's log files, with Tomcat8, which gives no problems, it is connected 
to the Active directory.
It indicates that a login attempt is made 3 times whether the person can log in 
with the Active directory account.
After that the login is accepted and qualified as successful.

In tomcat 9, different versions tried, also version 9.024, the control of 1 
attempt becomes visible,
which is successful. But then the check is stopped (not 3 times as Tomcat8) and 
the connection is marked as unsuccessful.

The environment for Tomcat9 is the same as from Tomcat8.
Windows 10 PRO
Oracle database rdbms 11.203
Ords2019 - Oracle listener

Tried both java versions:
E:\java\jre64b\bin>java -version
java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)


E:\java\openjdk\bin>java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)

Tomcat 9.024 directory structure.
( log files in the attachments )


<?xml version="1.0" encoding="UTF-8"?>
  <Valve className="org.apache.catalina.authenticator.SpnegoAuthenticator"
  <Realm className="org.apache.catalina.realm.JAASRealm"

    com.sun.security.auth.module.Krb5LoginModule required


     default_realm        = U4AGR.COM
     default_tkt_enctypes = rc4-hmac aes256-cts-hmac-sha1-96 
     default_tgs_enctypes = rc4-hmac aes256-cts-hmac-sha1-96 
     permitted_enctypes   = rc4-hmac aes256-cts-hmac-sha1-96 
     dns_lookup_kdc = true
     dns_lookup_relam = false

     U4AGR.COM = {
        kdc = u4agr.com
        default_domain = U4AGR.COM
.u4agr.com= U4AGR.COM
u4agr.com= U4AGR.COM


Creation statement for tomcat.keytab:
ktpass /out c:\Temp\tomcat.keytab /mapuser DECADE_SSO_TC.U4AGR.COM /princ 
HTTP/nlsl-decadetst.u4agr....@u4agr.com /pass "D3cad3401" /kvno 0 -ptype 
ktpass /out c:\temp\1c-tomcat.keytab /mapuser DECADE_SSO_TC.U4AGR.COM /princ 
HTTP/nlsl-decadetst.u4agr....@u4agr.com /pass "D3cad3401" -crypto All /kvno 0 



Met vriendelijke groeten van
Heidi Leerink - Duverger
Technisch Consultant

In business for people.
Unit4 Business Software Netherlands B.V.
Papendorpseweg 100, 3710 BJ Utrecht, Netherlands
T  +31 88 247 1444
E  heidi.duver...@unit4.com
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