Hi, If you've got a citrix server with memory optimizations enabled you can view the alternative data streams by running AdsCleaner. My question is - if you've excluded an application from memory optimization, why would it still appear in the list? Tia. Andrew Gilwood CS Ltd Registered Office : Mount Ashbrooke, Holmland Buildings, Tunstall Road, Sunderland, UK, SR2 7RR. No. 6099397 England