This is the release group tag or uploader signature. In the unofficial distribution scene (torrents, file sharing sites), “JU” likely identifies the individual or team who repackaged, tested, and released this specific build. It does not originate from Microsoft. Common scene tags include GEN2, FTUAH, MULTi, JUNE, etc. “JU” could be initials or a group name.
This specifies the architecture. 64-bit versions can handle more than 4GB of RAM, run modern applications, and support the security features required by Windows 11. Most modern PCs use x64. (Note: Windows 11 has no official 32-bit version). windows 11 x64 21h2 pro 3in1 oem esd multi7 ju
This edition includes features missing from Home: BitLocker encryption, Remote Desktop (host), Hyper-V virtualization, Group Policy Management, and Windows Sandbox. Pro is the standard for business, power users, and developers. This is the release group tag or uploader signature
Some OEM-modified ESD builds may not have properly signed bootloaders. Enter your BIOS/UEFI and disable Secure Boot before installation, then re-enable after. This specifies the architecture