The vendor has published 2 unique mention(s) for this bug: 1. The vDisk status icon on the Windows tray on target devices would sometimes disappear. This is because it would not be re-displayed if the explorer process that implements the desktop restarted. 2. If Windows taskbar (Explorer) restarts, such as after a crash or after you log off and log on, the vDisk status icon in the system tray might disappear permanently. Latest urls for this bug: 1. https://docs.citrix.com//en-us/provisioning/current-release/whats-new/fixed-issues