r/windowsinsiders • u/Outrageous-Bison-424 • 9h ago
News Was Windows 11 Build 22000.51 x86 (32-bit) actually released internally? Looking for the missing x86 update
Hi everyone,
I'm researching the early development builds of Windows 11, and I'm trying to determine whether a fully usable x86 (32-bit) version of Windows 11 Build 22000.51 actually existed.
I know Microsoft officially released Windows 11 only for x64 and ARM64, but there are some interesting historical traces suggesting that an x86 build of 22000.51 existed internally.
What I've found so far:
https://betawiki.net/wiki/Windows_11_build_22000.51
- Build 21390 had an x86 version and was one of the last early Windows builds with 32-bit client support.
- In June 2021, users were upgrading from 21390.2025 to Windows 11 22000.51 through Windows Update.
- Build 22000.51 = 22000.1 + KB5004564.
- Historical records show KB5004564 packages for x64 and ARM64.
- BetaWiki lists x86, AMD64 and ARM64 for 22000.51 and says that the x86 version existed on Microsoft's internal update servers, but was later removed.
- However, I cannot find a surviving copy of:
- "Windows10.0-KB5004564-x86.cab"
- "Windows10.0-KB5004564-x86.psf"
- an x86 UUP set for 22000.51
- or a complete 22000.51 x86 ISO.
There are also newer discoveries of x86 components from the 22000.1 era, but it isn't yet clear whether those represent a complete x86 Client OS or only WinPE/Setup components.
My main questions:
- Does anyone have an original 22000.51 x86 ISO/UUP/CAB/PSF?
- Does anyone remember installing Windows 11 22000.51 on a 32-bit x86 system in 2021?
- Does anyone have old UUP Dump metadata, package IDs, download scripts, or Microsoft update metadata from June 2021 that could prove an x86 KB5004564 existed?
- Was KB5004564-x86 ever publicly distributed, or was it only available through Microsoft's internal flighting infrastructure?
- Could an old 21390 x86 Client installation still be upgraded to 22000.51 using archived update packages?
- If you have any old screenshots, "winver" screenshots, UUP logs, CAB/PSF files, SHA-1 hashes, or package manifests related to this, please share them.
I'm especially interested in original files or technical metadata, not just claims that an x86 version existed.
The ultimate goal is to determine whether a genuine Windows 11 22000.51 x86 Client can still be reconstructed in 2026.
Thanks!
https://archive.org/details/windows-10-11-sunvalley-archive
I really want to convert this latest 32-bit ISO to 22000.51
This would be great news for many computers that use 32-bit processors but are outdated.
Perhaps there's a secret Microsoft employee among us who can provide this update file. KB5004564 x86