Dev Channel

Download Windows 10 (build 20150) Insider Preview ISO file

Microsoft makes available the Windows 10 build 20150 ISO for PC to Insiders — Here's how to download it.

Download Windows 10 Insider Preview ISO files

UPDATED 6/18: Windows 10 build 20150 ISO is now available for download for anyone looking to test the new version doing a clean installation or in-place upgrade.

Microsoft is releasing the first official ISO file of Windows 10 in the Dev Channel (Fast ring) after completing the May 2020 Update, so enthusiasts and developers can get their hands early on features and improvements coming in future releases. This rollout is not meant to install the operating system in your primary device.

If you’re already a member of the Windows Insider Preview program, you don’t need to download the ISO file for build 20150, as you can simply use Windows Update from the Settings app to upgrade to the latest build.

How to download build 20150 ISO file for Windows 10

To download the latest preview build of Windows 10 with changes coming in future releases, you need to login to this Microsoft support website. Once you’re in the download page, you will need to choose the edition, and click the Confirm button to download.

After you finish downloading the official ISO file, you can use different tools, such as Rufus to create a USB bootable drive to install the operating system. Alternatively, you can simply mount the ISO to begin the setup, if you’re planning to do an in-place upgrade.

Alongside the availability of build 20150, Microsoft is still making build 19041 as part of the version 2004 development and build 18363, which belongs to November 2019 Update development.

If you’re looking to upgrade your computer running Windows 7, or you need to do a clean install of Windows 10, Microsoft also makes available the ISO files for the official version of Windows 10, which you can get using the Media Creation Tool or through the Microsoft support website.

For more details make sure to check out the complete guide with all the changes that Microsoft has been working on in the Fast ring development of Windows 10.

Originally published on April 2016, updated on June 2020.