Windows 10: Should I buy a product key for Home after downgrading from Pro to Home?

I had a Windows 10 pro edition with no product key, after downgrading to home, i've decided to buy a product key. Should I buy product key home or pro?

:)

 

Usable Product Keys for Enterprise downgrade to Pro


Hello wetenhr, and welcome to Ten Forums.

You could downgrade to Windows 10 Pro using the generic key under step 1. You'll still be using the same version that you currently have installed, but you will be able to update to the latest version and build via Windows Update.

When it's finished downgrading, you could try to activate Windows 10 Pro with your Windows 7 Pro or Ultimate key. If unsuccessful, you may need to purchase a Windows 10 Pro key from the Store to use to activate with.

 

Downgrade from Windows 10 Pro to Home Using 7 Key

I've been given a PC with WIndows 10 Pro. The Windows 10 Pro appears to be a trial version. If I downgrade to Windows 10 Home using the following tutorial, can I use a Windows 7 Home Product key for the final "Change product key" step? Downgrade from Windows 10 Pro to Windows 10 Home

 

Product Key not valid for downgrade

The problem is Microsoft never handled it.

Downgrade rights is handled by Lenovo, etc.

This is the information I saved before Microsoft pulled it:

Here is the information about Downgrade rights. It is an old Microsoft link which they removed but the information still apples>

Device Partner Center

Downgrade rights for Windows software
The following OEM versions of Windows software are eligible for downgrade rights.

[table][tr][td]Windows 10 Pro includes downgrade rights to:

• Windows 8.1 Pro
• Windows 7 Professional

[/td][td]Windows 8.1 Pro includes downgrade rights to:

• Windows 7 Professional
• Windows Vista Business

[/td][td]Windows 7 Professional and Windows 7 Ultimate include downgrade rights to:

• Windows Vista Business and Windows Vista Ultimate
• Windows XP Professional, Windows XP Tablet PC Edition, or Windows XP x64 Edition

Note Other OEM Windows 7 versions (for example, Windows 7 Home Basic and Windows 7 Home Premium) do not include downgrade rights.[/td][/tr][/table]

Note downgrade rights are only available as long as Microsoft provides support for that earlier version,
as outlined in the
Windows lifecycle fact sheet.

Steps for an end user to downgrade Windows software
To downgrade eligible Windows software, end users must:

• Purchase a PC preinstalled with Windows software.
• Accept the Microsoft Software License Terms.
• Perform the downgrade process to the eligible downgrade product using the media/key from a genuine, previously licensed OEM or retail product.

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That's why I advise you to contact Lenovo.