Regardless if a system file, component or application was updated, ESD upgrade replaced it. In ESD upgrade full Windows system (all system files and native applications) were replaced, with the same file or app version even in case the new build did not include a newer updated version.

It is differential, scanning user's existing Windows 10 installation only downloading and installing those system files that have changed. Through some registry modifications users can at least for now disable UUP and get ESD version of the build upgrade, but it seems that this option might not be available in the future. Since Windows 10 Insider Build 14986 Microsoft has started to use new Unified Update Platform (UUP), which no longer offers the install.esd file (read more in this post). With it we could create DVD / USB install media to be used in clean, in-place and repair installs. Since beginning of Windows Insider program we geeks have had a possibility to convert the ESD file of new upgrade build to an ISO image ( tutorial). See this tutorial instead: Windows Insider - Get Latest Fast Ring ISO image Thanks for all our members and guests alike who have used the tool. As UUP Dump is working perfectly, allowing users to create Insider ISO images even when not opted in for Insider program, I see it pointless to update this tool.

Microsoft has made some changes in the delivery system.

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