We are using FreeIPA for Linux accounts and a Windows DC for Windows accounts. Users were able to access their Linux file systems from Windows using their windows user name and password.

After upgrading samba from samba-4.10.16-7.el7_9.x86_64 to samba-4.10.16-18.el7_9.x86_64 users cannot authenticate and I get the following error message:

1.2.3.4.log:
../../source3/auth/auth_util.c:1889(check_account)
check_account: Failed to convert SID
S-1-5-21-xxxxxxx-xxxxxxx-xxxxxxx-1158 to a UID (dom_user[DOMAIN\username])

Winbind is still running

My smb.conf:

[global]
netbios name = HOSTNAME
security = ADS
workgroup = DOMAIN
realm = DOMAIN.FULL.NAME

socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072
SO_SNDBUF=131072
use sendfile = true
dns proxy = no

log file = /var/log/samba/%m.log
max log size = 50
log level = 1

client signing = required
server signing = auto

[Tmpdisk]
comment = TMP-Disk
public = yes
path = /tmp
browsable = Yes
read only = No

Nothing else updated or changed. What do I miss? This setup was working for years..

Thank you in advance!

Gerhard Schneider

—
Gerhard Schneider Institute of Lightweight Design and e-Mail: gs@ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 1 58801 31716
TU Wien / Vienna / Austria Fax: +43 1 58801 31799
A-1060 Wien, Gumpendorfer Straße 7 http://www.ilsb.tuwien.ac.at/~gs/