Here’s the process to restore Winbind.

Restore old config.

<pre lang="bash">
cp /etc/sssd/sssd.conf-xxxxxxx /etc/sssd/sssd.conf
cp /etc/krb5.conf-xxxxxxx /etc/krb5.conf

Disable SSSD. Authconfig creates /etc/nswitch.conf.

<pre lang="bash">
authconfig --disablesssd --disablesssdauth --updateall

Start Winbind.

<pre lang="bash">
service winbind start; service smb start; service nmb start