Citrix Receiver 4.12 is a legacy version released in 2018. It is no longer supported by Citrix and lacks critical security updates and compatibility with modern operating systems (including Windows 10/11 updates and macOS). For production environments, Citrix strongly recommends using the current Citrix Workspace app (the renamed and updated version of Receiver).
How to Download Citrix Receiver 4.12 (Legacy Version) download citrix receiver 4.12
If you have an application that requires Receiver 4.12, consult your IT department—they may need to upgrade the backend Citrix infrastructure, not the client. Citrix Receiver 4