Dear all, I am trying to configure ISA server so that all logs will show which NT account was accessing which resource. Simple yes? Just select 'Ask unauthenticated users for identification' and the logs will record the account details. However when I do this then certain users who I want to have access to apps such as MSN Messenger cannot get it. If I untick the box it comes back just fine. I have set up protocol rules to allow the users access to Messenger but this won't work, those rules only seem to work to when I have unticked the box described above. Thanks in advance for any suggestions/help, James.