Comment # 8 on bug 1040951 from Samuel Cabrero

Hi Flo,

> D [29/Jun/2017:16:04:15 +0200] [Job 97] gss_krb5_import_cred
> ccache[DIR::/run/user/54400/krb5cc/tkt] failed with [Unspecified GSS
> failure.  Minor code may provide more information: No credentials cache
> found] -the caller may retry after a kinit.

This means that the default credential cache type is set to DIR but on
pam_winbind.conf is set to FILE.

+ Can you post /etc/krb5.conf?
+ Can you post the output of 'klist' after log in with an AD user?