Hello, I have seen that if I am using the register user popup (click on Add User from the Users screen), and if there is some kind of validation error on one of the fields I have just entered, the popup just dissapears (without displaying any error message). Accessing the following link (non popup) works http://csp1:8080/xwiki/bin/register/XWiki/Register. I don't think that this behavior is normal. 2nd question: is there a way to use dots (.) in the username? For the moment we are using XWiki for testing, but when we'll switch to LDAP authentication, we'll have all of our usernames with dots. I didn't look for a documentation regarding LDAP, but I think the LDAP support is integrated within XWiki. Thanks in advance, Best regards, Cristi. -- View this message in context: http://n2.nabble.com/Problems-while-registring-users---using-dot-in-usernam… Sent from the XWiki- Users mailing list archive at Nabble.com.