According to the article here, Sage is not supported in a Citrix environment. Any insight into getting this working so that users don't receive the error below.
https://support.sagepayments.com/link/portal/20000/20000/Article/1136/I-m-on-a-Citrix-environment-and-the-Sage-Exchange-application-reinstalls-every-time-I-log-in-Why-is-this