1. Regain Your Lost Windows Pro Features: A Step-by-Step Guide After Unintentionally Downgrading to Home Edition

Relax: If you reinstall Windows Pro, the activation servers will restore the activation without a squawk.

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There are many reasons why you might want to use the reset option to give your Windows-based PC a fresh start. Maybe you’ve been running Insider preview releases and you want to return to the stability of the General Availability channel. Perhaps you’re handing down an old PC to another family member and you want to clean off all traces of your old installation.

I’ve spent the past week or two resetting an office full of Windows PCs, and one minor problem came up multiple times. When the reset was finished, I discovered that I was running Windows Home edition. That’s the edition that was on this PC when I acquired it, but one of the first things I did was to upgrade to Windows 10 Pro, and I have no idea where that product key is now.

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This is a surprisingly common occurrence, especially given how many PC makers try to shave a few dollars off the price of their hardware by installing the much less expensive Home edition. (Even Microsoft! The new Surface Pro 9, for example, is available only with Windows 11 Home edition.)

When the OEM built that PC, it embedded the licensing information for the preinstalled Home edition in the BIOS of the system. When you do a full reset, that’s the information that’s used for the installation. As far as Windows is concerned, it’s putting things back to where they were when you bought the system, based on the embedded version information it found.

The good news is that Microsoft’s activation servers also contain details for your Windows Pro upgrade. When you entered the product key to perform that upgrade the first time, those servers created a second activation record along with a hash that identifies your system based on its unique hardware. If you reinstall Windows Pro on that system, even without a product key, the activation servers will restore the activation without a squawk.

Ed Bott

In this case, the simplest solution is to use Microsoft’s generic product key for Windows Pro to quickly upgrade from Home to Pro.

Go to Settings > System > Activation. Click to expand the section labeled Upgrade your edition of Windows, and then click the button labeled Change; it’s just to the right of the Change product key heading, as shown here.

Enter this product key in the dialog box that appears next:

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Follow the prompts to complete the upgrade. After you restart and connect to the Internet, you should have a fully activated Windows Pro installation.

There’s nothing magical about that product key. If you use it to upgrade a system running Home edition that has never been activated for Windows 10 or Windows 11 Pro, you’ll get an activation error, and the only way to recover is to enter a valid (Microsoft calls it “genuine”) product key that entitles you to the upgrade.

And if you want to skip this song and dance in the future, try reinstalling from a bootable USB flash drive. When you run the setup, choose the option to skip entering a product key, which then lets you choose the exact edition you want to install.

See also

Still have a Windows 10 PC? You have 5 options before support ends next year

How to upgrade your ‘incompatible’ Windows 10 PC to Windows 11

How to make Windows updates less annoying, in three easy steps

7 ways to make Windows 11 less annoying

How to screen-record in Windows 10 or Windows 11

• Still have a Windows 10 PC? You have 5 options before support ends next year
• How to upgrade your ‘incompatible’ Windows 10 PC to Windows 11
• How to make Windows updates less annoying, in three easy steps
• 7 ways to make Windows 11 less annoying
• How to screen-record in Windows 10 or Windows 11

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