It actually seems like it is logging in correctly. "Rodrigo Castro/Primitivax" and " cn=Rodrigo Castro/ou=primitivax. ¨ are the same thing - just formatted differently. And it's not saying "user not found" or something like that.
I'd be looking into the error message "http Status Code: 404 - Reason: File not found or unable to read file", which to me says that the file/page you're trying to hit is the problem. It either isn't where the server thinks it is, or is named differently, or something.