For modern operating systems (Windows 10/11), Endress+Hauser recommends moving to their current configuration tools: ReadWin 2000 PC Software - Endress+Hauser
Because Siemens discontinued Commuwin II over a decade ago, you cannot find it on the official Siemens support website (which now redirects you to WinCC). Here are your three legitimate avenues: commuwin ii software download
Your first stop should always be the official Endress+Hauser Download Center. Search under "Software" or "Software Updates." For modern operating systems (Windows 10/11)