What is Windows Default Product Key

Generic keys (aka: "default keys") for Windows 11 from Microsoft will allow you to install or upgrade to a specific Windows 11 edition you want, but will not activate it.

Using a generic key can be helpful if you wanted to install or upgrade to a specific Windows 11 edition for evaluation or testing on a PC or virtual machine, or just don't have a digital license or your genuine product key currently available and you will activate later when able.

If you do have a digital license linked to your Microsoft account for the specific Windows 11 edition associated to the PC, Windows will automatically be activated by the digital license if the PC is connected to the Internet.

Here’s the list of Windows 11 default product keys:

Windows 10 allow end-user to install the operating system without entering a product key during installation.

Generic/Default product keys for Windows 10 can be used in a variety of circumstances, including volume licensing and bulk installation, testing and evaluation, VM setup, and as part of the upgrade process from earlier versions of Windows.

These keys will not activate Windows 10 on your machine, and KMS keys will not work on standard retail copies of Windows.

Here’s the list of Windows 10 default product keys:

Windows 7 allow end-user to install the operating system without entering a product key during installation.

By not keying in a product key, users get to enjoy 30 days of free usage (rearm to extend to 120 days) without activating the operating system, as initial grace or OOB grace period.

Although end-user does not enter any product key into the system, Windows 7 uses a default product key to install the operating system.

In other words, Windows 7 has a default product key comes together with it that is the same for all installations of Windows, differentiate only by editions of Windows.

Although the default product key cannot be used to activate Windows, it can be used as a mean to create a Windows 7 unattended setup which automates the deployment of Windows without user input or intervention.

The default product key can also used when user decides to deactivate Windows and go back to trial period, where a product key is required, and the default product key will make it runs for 30 days without activation.

Here’s the list of Windows 7 default product keys: