Please note that the only procedures supported and maintained by Centreon are those published in the official documentation. If you have a question about this article, post it in the comments.
Symptom
I cannot log in with a username containing a special character.
Problem
As UTF-8 is managed from LDAPv3, you are probably not using the right LDAP version.
Solution
Ensure version 3 of LDAP is configured in the Administration > Parameters > LDAP page.