product key win 11 Generic keys (aka: "default keys") for Windows 10/11 from Microsoft will allow you to install or upgrade to a specific Windows 10/11 edition you want, but will not activate it..
windows-10-product-key
Windows 11 uses a product key to ensure your OS is genuine—in other words, not pirated. You can find the product key in use on your PC, which is particularly useful if you bought Windows yourself and need to reinstall it.
product-key-win-10-pro
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
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