Many People have a question in mind that how to download Windows 8.1 product key from Microsoft.
Get the Windows 8.1 ISO file. If you have a Windows 8.1 product key, click the "Install Windows 8.1" button and run the installer that downloads. Assuming you have a Windows 8 key (which is more likely), click the "Install Windows 8" button and run that installer. In the Setup window, enter the Windows 8 product key when prompted.
The installer will go online and get some things ready. Click "Next" and Windows 8 will begin to download. Close the window by clicking the red X, and then click the "Install Windows 8.1" button. When you run the installer it will start downloading Windows 8.1 immediately (you won't be asked for a Windows 8.1 key). When done, click "Install by creating media" and click "Next". You’ll be asked which media to use. Select "ISO file" and click "Save".
The ISO file will be created and you’ll be given the option to burn it to disc if you wish.
Now, here’s an important note. When you come to install Windows 8.1 it may not accept your Windows 8 key. It probably will if it comes from a purchased copy of Windows 8, but not if it came with Windows 8 pre installed on a new PC.
The installer will go online and get some things ready. Click "Next" and Windows 8 will begin to download. Close the window by clicking the red X, and then click the "Install Windows 8.1" button. When you run the installer it will start downloading Windows 8.1 immediately (you won't be asked for a Windows 8.1 key). When done, click "Install by creating media" and click "Next". You’ll be asked which media to use. Select "ISO file" and click "Save".
The ISO file will be created and you’ll be given the option to burn it to disc if you wish.
Now, here’s an important note. When you come to install Windows 8.1 it may not accept your Windows 8 key. It probably will if it comes from a purchased copy of Windows 8, but not if it came with Windows 8 pre installed on a new PC.
However, you can cheat the system. Grab a key from here and use this to install Windows 8.1 and definitely it works.
After successful installation while activating the product choose your windows 8 key and it accepts that key.
