Which Windows versions and build types can I download from UUP dump?

UUP dump lets you download Unified Update Platform files directly from Windows Update servers, covering Windows 11, Windows Server, and Windows 10 across several release channels and both x64 and arm64 architectures. If you want a specific Windows build — a public release, a preview, or an experimental future-platform build — you can pick it from the site's quick options or browse the full build list.

Windows versions available

The site organizes downloads by product family and version:

Windows 11 has the widest coverage, including both stable and pre-release branches. Windows Server and Windows 10 are limited to their listed versions.

Build types and release channels

Beyond picking a version, you choose a release type. Each quick option targets a different audience:

• Latest Public Release build — the newest build for regular users.
• Latest Release Preview build — reliable builds for previewing the next release; suited to trying upcoming releases.
• Latest Beta Channel build — reliable builds with most upcoming features; suited to early adopters.
• Latest Experimental Channel build — somewhat unreliable builds with new ideas and long-lead features; suited to enthusiasts.
• Latest Future Platforms build — somewhat unstable builds with the latest platform changes and early features; suited to highly technical users.

The first three are the safer choices for everyday or near-release testing. The last two trade stability for earlier access to platform changes.

Architectures

Each quick option is offered for two architectures:

• x64 (listed as amd64 / x64 in the build list)
• arm64

Pick the one matching your target device. A build entry may appear twice — once per architecture — as seen in the recently added builds list.

Finding a specific build

If the quick options don't match what you need, the site points you to its Add a new build page to search for a particular build. The homepage also shows a Recently added builds table with columns for build name, architecture, and date added, which is useful for spotting the newest uploads.

For example, recent entries included a Windows 11 22H2 cumulative-style build (22621.1778) for x64, a Windows 10 21H2 cumulative update (19044.7727), and multiple Windows 11 Insider Preview Feature Updates (such as 26220.9568 and 28020.3112) in both arm64 and x64.

Choosing between them

• Want a stable, current install? Use Latest Public Release build.
• Want to preview the next release with reasonable reliability? Use Release Preview or Beta Channel.
• Want the newest features and accept instability? Use Experimental Channel or Future Platforms.
• Need a specific version or an older build? Browse the version list or use Add a new build.

UUP dump is not affiliated with Microsoft; it retrieves files from Windows Update servers. Availability depends on what those servers currently offer, so older or niche builds may not always be present.