UPDATED 8/26: Windows 10 build 20201 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 another official ISO file of Windows 10 in the Dev Channel (Fast ring) to allow enthusiasts and developers to get early access to 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 20201, as you can simply use “Windows Update” from the Settings app to upgrade to the latest flight.
How to download build 20201 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 the file.
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.
- Windows 10 build 20201 ISO | Download
Alongside the availability of build 20201, Microsoft is also making build 19042 as part of the Windows 10 version 20H2 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 Dev Channel development of Windows 10.
Originally published on April 2016, updated on August 2020.