How to upgrade to Windows 8.1 for free? | Even if your PC is NOT ACTIVATED

In this, blog post, I will show you, how to upgrade to Windows 8.1 for Free.

Why should you upgrade?

Support for Windows 7 ended on January 14, 2020. Learn more >

1. Download the correct Windows 8.1 Disc Image (ISO File)

The best way to upgrade is using ISO File. which you can easily download from the Microsoft website for FREE.
Here's the step-by-step guide to downloading Windows ISO Files: 

Download Windows 8.1 ISO File

Or, you can directly download it from my site: Microsoft Product for FREE
Please note: you have to download the correct ISO file according to your current Windows System type.
To check the system type
On Windows 8:
Right-click on Start and select System. And then look next to System type.
On Windows 7:
Click on Start > Right-click on My Computer and select Properties. And then look next to System type.
Also note: you can't directly upgrade to Windows 8.1 from Windows Vista and older versions of Windows (XP. 2000, ME, 98 SE, 98, 95, etc).

2. Upgrade to Windows 8.1

Windows 8.1 upgrade matrix

Windows version and edition > Windows 8.1 edition
  • Windows 7 Starter > Windows 8.1 Core
  • Windows 7 Home Basic > Windows 8.1 Core
  • Windows 7 Home Premium > Windows 8.1 Core
  • Windows 7 Professional > Windows 8.1 Pro
  • Windows 7 Ultimate > Windows 8.1 Pro
  • Windows 7 Enterprise > Windows 8.1 Enterprise
  • Windows 8 Core > Windows 8.1 Core
  • Windows 8 Pro > Windows 8.1 Pro

Steps to upgrade to Windows 8.1:

  • After downloading, open the Downloads folder (or, the folder where you downloaded Windows 8.1 ISO file).
  • Open the ISO file by double-clicking on it. (You will have to use software like WinRAR/7-Zip to open/extract the ISO file on Windows 7).
  • And then open setup.
  • On UAC, Click on Yes.
  • If it asks for a Product Key in this step, that means your current Windows is not activated. Don’t worry use these keys.
    For Windows 7 Starter, Home Basic, Home Premium | Windows 8 (Core), with Bing: M9Q9P-WNJJT-6PXPY-DWX8H-6XWKK
    For Windows 7 Professional, Ultimate | Windows 8 Pro: GCRJD-8NW9H-F2CDX-CCM8D-9D6T9
    For Windows 7 Enterprise | Windows 8 Enterprise: MHF9N-XY6XB-WVXMC-BTDCT-MKKG7
    These keys are taken from the Microsoft website. These are not Product Keys. This means your Windows will not going to activate. If the above keys do not work then try other keys from here: KMS client setup keys.
    And then click on the Next button.
  • On the ‘License terms, check the I accept the license terms' checkbox.
  • Then, click on Accept.
  • On 'Choose what to keep', click on Next.
    If you want to start fresh with a clean installation of Windows 8.1, select Nothing, the Next button.
  • On ‘Ready to install’, Click Install.
  • And then, your PC will starts upgrading to Windows 8.1. This may take half an hour.
  • After the Upgrade process completes, click on Start Settings Windows Update, and click on Check for updates. And install all the updates. This includes updates for Windows 8.1 and device drivers.
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