Twitter and Reddit users (via WindowsLatest) quickly spotted the bug, with hundreds of Windows Insiders being able to upgrade their Windows 10 machines to older CPUs. Microsoft has strict minimum hardware requirements for Windows 11, leaving millions of computers behind, so the mistake will once again highlight the controversial company upgrade policy. An unsupported computer comes with Windows 11.Picture: AceRimmer412 (Reddit) Windows 11 officially requires processors Intel 8th Gen Coffee Lake or Zen 2 and above, with very few exceptions. Although there are easy ways to install Windows 11 on unsupported CPUs, Microsoft does not even allow its Windows Insiders to officially install beta versions of the operating system on unsupported computers, so this incorrect version is rather unusual. Microsoft is aware of the error and says it is investigating. “It’s a mistake and the right team is investigating,” says the official Windows Insider Twitter account. If you were able to install Windows 11 on an unsupported computer and were just waiting for the Windows 10 Version Preview updates, you should be able to reset the unexpected upgrade to the Windows 11 settings section.