We have a client running their own internal network. one of their local drive mappings is U:. The users access a Citrix published application over the web on our servers (PS 4.5). While running the application the users require access to their U: drive. This is accomplished with a "change client U: U:" in their login script. Works fine. The client is converting their whole network to Citrix PS 4.5. While testing their new setup, the user sees the U: drive in their local Citrix session. when the user connects to our Citrix server over the web as before, the U: drive does not map and is not available. If the U: drive is mapped on their local PC before their local Citrix session is established, then the U: drive is available in both local and remote Citrix sessions. It seems as if the "client" nature of a Citrix server originated ICA connection is different to a workstation running the ICA client. All reasonable suggestions gratefully received.