Blackbaud Hosting Services requires Citrix Receiver to be installed on any computer before a user can launch the hosted applications. Citrix updates the Citrix Receiver program on a regular basis, so it is possible to have an older version installed on a computer or an older version available for download.
Blackbaud recommends that organizations use the latest version of Citrix Receiver, or any version currently supported by Citrix. Older versions of Citrix Receiver may function correctly, but the latest versions offer the best performance and reliability.
The download for the latest supported version of Citrix Receiver is available from the Blackbaud Hosting Services website. Citrix Receiver can be installed or upgraded by following the steps in this Knowledgebase Article:How to download and install the Citrix Receiver