Steps to reproduce:

1. Users\Authentication\LDAP settings, edit the connected LDAP server
2. Run a test with valid credentials. Credentials work, but no user roles or user groups

Configuration screen

AD structure containing Domain Admins OU (which is user account I am testing with). 

AD structure showing the Zabbix-Admin security group

I have updated the CLdap.php file manually per https://support.zabbix.com/browse/ZBX-22597

Unsure on how to update to 6.4.2rc1 as I am not very strong with git commands in Linux/Ubuntu. 

Would anyone be able to assist?  

Thank you,

Lucas