The *libwbclient* library fails to connect to Samba shares hosted on Red Hat Enterprise Linux 7.4
The interface between Samba and the System Security Services Daemon's (SSSD) Winbind plug-in implementation changed. However, this change is missing in SSSD. As a consequence, systems that use the SSSD *libwbclient* library instead of the Winbind daemon fail to access shares provided by Samba running on Red Hat Enterprise Linux 7.4. There is no workaround available, and Red Hat recommends to not upgrade to Red Hat Enterprise 7.4 if you are using the *libwbclient* library without running the Winbind daemon.