Microsoft will support a configuration that is Citrix XenApp 6.5 with session virtualization for Microsoft Dynamics CRM for Outlook on a single XenApp instance. That support is only for Microsoft Dynamics CRM 2013 Service Pack 1 for
Microsoft Office Outlook.
Please note that Citrix deployment may include a complex configuration topology based on other configurations, and these are not supported. For example, these configurations are not supported:
Citrix products like XenApp (except for version 6.5), XenDesktop, and XenServer and versions of these products