When i start server manager i get an error Ldap Access Denied. and then the mmc closes. i looked up the error on microsoft and it was saying that it refered to Registry permissions. I have set the permissions for the admin account but i still get the error. i think that due to this my clients are getting the error when replying to mail Access Denied. & could not deliver in the specified time. the event viewer is saying (sorry not in front of the machine) Ldap service failure server Down. Guys this is driving me insane. can anyone help PLEASE....