Hello Inge. Unfortunately, older RD app versions (such as 10.2.4012.0) are no longer available through the Microsoft Store or official Microsoft download channels.
That said, if your environment still relies on standard RDP connections, you can continue using mstsc.exe (the built-in Remote Desktop Connection client) or consider deploying Remote Desktop Web Client or Azure Virtual Desktop for similar functionality, depending on your infrastructure. For enterprise use cases, these options typically provide better long-term support and update compatibility.
I’d recommend avoiding third-party mirror links, as they may pose security and compliance risks.