Windows 10 Build 10074, known as the "Insider Preview" from 2015, introduced a distinct set of system sounds that were more refined and modern than the initial Windows 10 releases. If you are looking to download these specific sounds to use on a modern version of Windows (like Windows 10 or 11), you can find them through community archives. Key Sound Features in Build 10074
Specific variations for , Email , and Messaging that were unified in later builds. Log-on/Unlock windows 10 build 10074 sounds download