WNA Stopped Working with Error KDC has no support for encryption type (14)
(Doc ID 2102480.1)
Last updated on JANUARY 01, 2019
Applies to:Oracle Application Server Single Sign-On - Version 10.1.2.0.2 to 10.1.4.3 [Release 10gR2 to 10gR3]
Information in this document applies to any platform.
Oracle SSO 10g ( 10.1.2.1 - 10.1.4.3)
Microsoft AD 2008
DES Encryption already enabled in AD
WNA was working fine and the problem started happening suddenly
OC4J~OC4J_SECURITY~default_island~1 log file shows the following error
Acquire TGT using AS Exchange
[Krb5LoginModule] authentication failed
KDC has no support for encryption type (14)
KerberosAuthenticator: GSSException raised in constructor - No valid credentials provided (Mechanism level: Attempt to obtain new ACCEPT credentials failed!)
GSSException: No valid credentials provided (Mechanism level: Attempt to obtain new ACCEPT credentials failed!)
Caused by: javax.security.auth.login.LoginException: KDC has no support for encryption type (14)
Caused by: KrbException: KDC has no support for encryption type (14)
Caused by: KrbException: Identifier doesn't match expected value (906)
KerberosAuthenticator: Please check the error messages and fix it. Restart OC4J (OC4J_SECURITY instance) server
KerberosAuthenticator: Possible errors may be:
KerberosAuthenticator: 1.HTTP service name in $ORACLE_HOME/j2ee/OC4J_SECURITY/config/jazn-data.xml or $ORACLE_HOME/j2ee/OC4J_SECURITY/application-deployments/sso/orion-application.xml is wrong.
KerberosAuthenticator: 2.KDC Details (host/port) in $ORACLE_HOME/opmn/conf/opmn.xml are wrong.
KerberosAuthenticator: 3.KDC is down.
KerberosAuthenticator: 4.KDC Details in the keytab file are wrong or the keytab file path has been incorrectly specified.
Change at AD Domain Controller level
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