This week we had major issues with our file and print server which also happens to be our primary domain controller. This affected printing and some applications which run on other servers, however the users with XP machines were able to explore our network drives, use Outlook and browse the internet. However the two Vista users could not. Their machines would not recognise the network at all. Once the problem with the server was resolved, the Vista machines would recognise the network again. Does anyone know why the Vista users were completely cut off from the network when the XP users were not? I'm not counting on this problem again but would like to know why the different operating systems behaved so differently. Thanks!