Why am I getting "KrbException: Invalid argument (400) - Cannot find key of appropriate type to decrypt AP REP - RC4 with HMAC"?

Solution Unverified - Updated -

Issue

  • I’m configuring Kerberos authentication for RH-SSO, but I received "KrbException: Invalid argument (400) - Cannot find key of appropriate type to decrypt AP REP - RC4 with HMAC" when I test Kerberos authentication. What is the issue?

  • Facing issues while configuring RH SSO Operator 7.6 on Openshift 4.x , SPNEGO login failed: java.security.PrivilegedActionException: GSSException: Failure unspecified at GSS-API level (Mechanism level: Invalid argument (400) - Cannot find key of appropriate type to decrypt AP-REQ - AES256 CTS mode with HMAC SHA1-96)

Environment

  • Red Hat Single Sign On (RH-SSO)
    • 7.x

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