Hi, the OS is Debian 8.9, ther version php is 7.0.As I indicate the problem is with the clients. As shown in the attached images, the plugins for ldap authentication are installed and configured. I have configured staff and client members, and only staff members can authenticate with the active directory, with clients showing authentication error. The error log from apache show this:root@OS-Ticket:~# cat /var/log/apache2/error.log | more AH00163: Apache/2.4.25 (Debian) configured -- resuming normal operations AH00094: Command line: '/usr/sbin/apache2' PHP Warning: Declaration of AssignmentForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/upload/include/class.forms.php on line 4367, referer: http://172.30.5.160/scp/login.php PHP Warning: Declaration of TransferForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/upload/include/class.forms.php on line 4487, referer: http://172.30.5.160/scp/login.php AH00169: caught SIGTERM, shutting downPHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/php_ldap.dll' - /usr/lib/php/20151012/php_ldap.dll: cannot open shared object file: Nosuch file or directory in Unknown on line 0 AH00163: Apache/2.4.25 (Debian) configured -- resuming normal operations AH00094: Command line: '/usr/sbin/apache2' PHP Warning: Declaration of AssignmentForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/upload/include/class.forms.php on line 4367, referer: http://172.30.5.160/scp/users.php?id=2 PHP Warning: Declaration of TransferForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/upload/include/class.forms.php on line 4487, referer: http://172.30.5.160/scp/users.php?id=2