If you are looking for an older version of Windows, check out the official list here. Lastly, these keys should only be used for temporary activation. Ultimately, you will have to buy a genuine ...

Note that each edition of Windows uses its own unique product key. For example, if you have a license for the Windows 11/10 ...

One method is to enter 'wmic path SoftwareLicensingService get OA3xOriginalProductKey' in Command Prompt This article ...