On Tue, 12 Apr 2011, Alain Péan wrote: > Hi John, > > Thnks for your answer. Here are the content of /etc/krb5.conf and klist > -ke. I agree that there can be siomething missing, that was working > before... The keytab isn't valid for the host as it doesn't contain a usable principal for doing a validation of the KDC. The pam_krb5 rpm has sensibly changed the default for validate from false to true. Try adding: [appdefaults] pam = { novalidate = true } I /think/ that'd work, but you'd be less secure than if you just sorted out your keytab. Get a real principal for your domain into the keytab, and validate will work. You're using LAB-LPP.LOCAL, but only have principals from TEST-LPP.LOCAL in your keytab. jh