How to troubleshoot “Cannot Start App” or “Cannot start Desktop” when launching an App or Desktop. Beginning August 2018, Citrix Receiver will be replaced by Citrix Workspace app. While you can still download older versions of Citrix Receiver, new features and enhancements will be released for Citrix Workspace app. Citrix Workspace app is a new client from Citrix that works similar to Citrix Receiver and is fully backward-compatible with. Locate and then right-click on the Citrix Receiver icon in your System Tray. Note: You may need to click the arrow near the date and time in the System Tray to locate the Citrix Receiver icon. Allow access to your computer's file system by using the Citrix Connection Center.