You can find your Windows 10 product key using Command Prompt by running a simple command. To access Command Prompt as a user with administrative privileges, open the Command Prompt and type: wmic path softwarelicensingservice get OA3xOriginalProductKey. Press Enter and in case your key is in your system firmware, it will be displayed on the screen. This is most effective with OEM systems whereby the key is hard-coded into the BIOS. It might not however show a key of digital licenses associated with your Microsoft account.
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