On 27 May 2020 Microsoft released Windows 10 version 2004 (also called 20H1 or the May 2020 Update). It came after version 1909 and introduced a larger set of changes than many of the later enablement-package updates.

Windows 10 version 2004 – May 2020

This release was originally planned for April but slipped to late May. It brought noticeable interface updates, better performance in several areas, and a few practical quality-of-life improvements that many users still notice today.

What changed in version 2004

Some of the more useful additions and changes were:

• A cleaner Start menu with reduced visual noise
• Search and Cortana finally separated into two different experiences
• Windows Search could now find files across the whole PC more reliably
• New system icons and a refined light theme
• Ability to uninstall a larger number of built-in apps
• Windows Update status icon in the system tray
• Several Notepad improvements (better encoding support and performance)
• Reserved storage (about 7 GB) to make future updates less likely to fail
• Windows Sandbox for safely testing software

A few older interface elements were also removed or simplified, including the People bar and certain account banners in Settings.

Screenshots

Available editions

Version 2004 shipped in the usual four main editions:

• Home – fine for most personal and home use
• Pro – adds BitLocker, Hyper-V, Remote Desktop host, and domain join
• Enterprise – volume-licensed edition with extra management and security tools
• Education – aimed at schools and universities

Microsoft never released an Ultimate edition for Windows 10. Home or Pro covers almost every individual user.

Download Windows 10 2004 (20H1)

Direct ISO links for this specific version:

Windows 10 (20H1 / 2004) 64-bit ISO – approximately 4.9 GB

Windows 10 (20H1 / 2004) 32-bit ISO – approximately 3.5 GB

If you simply need a working Windows 10 install in 2026, the final release (version 22H2) is the better choice because it received updates for much longer.

Installing from the ISO

Create a bootable USB with Rufus or the Media Creation Tool, boot from it, and choose either an upgrade or a clean install. After Windows finishes setting up, run Windows Update once so any remaining cumulative updates for 2004 can install.

You can also mount the ISO file inside Windows and run setup.exe if you prefer an in-place upgrade.

A few practical notes

• Windows 10 as a whole reached end of support on 14 October 2025. Version 2004 stopped receiving regular updates years earlier.
• You still need a genuine product key that matches the edition you install.
• For any new installation today, 22H2 remains the recommended Windows 10 build.

All current and older Windows 10 ISOs are listed on the main Windows 10 download page.