Hi, On CentOS 7.7.1908 I've got the following error message: unix_chkpwd[1026]: could not obtain user info (root) I dont' know why... There are no SELinux errors, and the permissions of relevant files are: ls -Z /etc/shadow /etc/passwd /usr/sbin/unix_chkpwd -rw-r--r--. root root system_u:object_r:passwd_file_t:s0 /etc/passwd ----------. root root system_u:object_r:shadow_t:s0 /etc/shadow -rwsr-xr-x. root root system_u:object_r:chkpwd_exec_t:s0 /usr/sbin/unix_chkpwd Any idea? Thanks in advance! -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org