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The Windows 10 Free Upgrade Campaign ended December 31, 2017 in Japan.
However,
At the time of writing this article, some people have had a successful free upgrade from Windows 7 /8.1 to Windows 10.
The face-to-face free upgrade campaign may have ended and may actually continue.
If you read the case of a free upgrade after the free upgrade campaign, you will find the following steps.
- Get "Media creation Tool" from Microsoft official website
- Run Mediacreation Tool
- Enter your Windows 7 or 8.1 product key during the upgrade to Windows 10
- Upgrade complete
That is,
Below are the minimum requirements for a free upgrade to Windows 10.
| conditions: | Have a genuine Windows 7 /8.1 product key |
2019/12/05
An MS employee leaked the secret that a free upgrade to Windows 10 is possible. For details, please read the related link (at the end of the sentence).
Generic key
The generic key is a product key assigned according to the pre-upgrade Windows edition.It is called a "generic key" because the same product key is used for each edition.
[Windows edition]
- Windows 10 /8.1 /7 Home
- Windows 10 /8.1 /7 Professional
- Windows 10 /8.1 /7 Enterprise
- ...
Enter the product key in the process of upgrading from Windows 7 /8.1 to Windows 10, but the PC after the upgrade will be replaced with the generic key.
Specific example of generic key
Reprinted from Microsoft Docs.Windows 10 Home
TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
WIndows 10 Pro
VK7JG-NPHTM-C97JM-9MPGT-3V66T
Windows 10 Home Single Language
7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH
Windows 10 Enterprise
NPPR9-FWDCX-D2C8J-H872K-2YT43
Confirm product key
There are two ways.- Use Registry Editor
- Use ProduKey
\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform\BackupProductKeyDefault
What you need to upgrade
Source: Microsoft ｜ Software Download* ISO file requires 8GB capacity
- Media Creation Tool ( Direct link )
- USB flash drive
- Or ISO blanks and writable DVD blank media
- Windows 7 /8.1 product key
Upgrade or clean installation process
- Run the media creation tool to create Windows 10 installation media
- Change the BIOS (UEFI) settings on your PC to boot from a USB or DVD drive
- Shut down your PC
- Boot PC from USB flash drive or DVD
- Start upgrade or clean installation
You will be asked to enter the product key during the upgrade.
However,
In some cases, like me, the product key input screen does not appear.
Summary
About generic keys- Product key for exclusive use of upgrade assigned corresponding to editions such as Windows Pro /Home
- The same generic key is used for each edition
- Cannot be used for free upgrade
- You can look it up with a registry editor, ProduKey, etc.
About upgrade
- Use a genuine product key
- You may not be prompted to enter the product key
- Generic key will be used after upgrade
Clean installation
Generic keys are said to be unusable for a clean installation of Windows 10.However,
Authenticity is unknown as multiple successful clean install hits.
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