The ultimate Windows 11 upgrade guide: Everything you need to know

New to Windows 11? We've got answers to all your questions - from system requirements to TPMs, Windows 12 expectations, and more - including those you didn't think to ask.

Windows 11 is about to celebrate its fourth anniversary and runs on hundreds of millions of PCs worldwide.

When it debuted in 2021, the new version of Microsoft's flagship operating system was arguably an incremental change to Windows 10, with a fresh look and feel on top of core code that was practically identical to its predecessor. The more important change, it turned out, was a new set of hardware compatibility requirements that made many existing PCs ineligible for upgrades. That decision marked a bold shift in direction for Windows, which has historically prized backward compatibility as a key requirement.

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