No product key is required, its a free upgrade from Windows 10 1607 to Windows 10 1709 as long as you are installing the exact edition.
Please be advised some users are reporting issues with the Windows 10 1803 update. Make sure you backup before attempting to upgrade:
http://answers.microsoft.com/en-us/windows/wiki...
How to block it if you don't want to upgrade:
https://www.groovypost.com/howto/block-windows-...
What is the make and model of your computer?
Have you checked the manufacturers website to determine compatibility?
Check this List to Determine if Your Computer is Compatible with the Windows 10 Fall Creators Update 1803
https://answers.microsoft.com/en-us/windows/wik...
perform the following tasks:
12 Things You Should Do Before Installing Windows 10 Creators Update (Version 1803)
[https://www.groovypost.com/howto/prepare-comput...](https://www.groovypost.com/howto/prepare-computer-windows-10-creators-update-version-1703/)
Download the Media Creation Tool Now
http://go.microsoft.com/fwlink/?LinkId=691209
Right click the MediaCreationTool.exe file then click Run as administrator.
Accept the End User License Agreement:
Select the option Create installation media for another PC if you want to download a ISO image or create a bootable DVD or USB thumb drive,
Click Next
If you want to download a particular edition or both architectures, uncheck the Use the recommended option for this PC.
Image
Click in the Edition list box, choose your edition then click Next.
Windows 10 - contains Windows 10 Home and Windows 10 Pro.
Windows 10 Home Single Language - only select this edition if you are running Windows 10 Single Language, Windows 8 Single Language or Windows 8.1 with Bing.
Windows 10 N - only select this edition if you reside in Europe, it does not contain Windows Media Player. It contains Windows 10 Home N, Windows 10 Pro N.
Downloading the ISO file
An ISO file is a digital or virtual replica of a physical disc. In order to use an ISO you must burn it to a optical disc. In the case of Windows 10, a blank Dual Layer DVD or an empty USB thumb drive. If you are using Windows 7, you can create the .ISO then burn it using the built in Disc Image utility. If you are running Windows XP or Windows Vista, you can using a third party burning tool such as ImgBurn or Roxio/Nero.
Exception: you can double click the ISO (or right click it, choose Open with > File Explorer), mount it and start the upgrade in Windows 10.
Creating a .ISO file
For the purposes of this exercise, we are gonna use the .ISO option.
Select ISO file, then click Save, Select your location then click Save.
Wait while the .ISO image is created.
Performing the upgrade:
Once you have the Windows 10 Spring Creators Update ISO, you can double click it to mount it then start the upgrade. If you are installing from a DVD or USB thumb drive, insert or connect it, then click the on screen notification. If setup does not start automatically, click Start > File Explorer > This PC > open the drive containing the Windows 10 setup files, then double click Setup.exe.
Click Run setup.exe
Wait while setup is initialized.
You can select download and install any important updates before upgrading. This is recommended since it can help to ensure a smooth upgrade. If you are not connected to the Internet, select the Not right now radio box instead. Click Next.
Wait while Windows 10 setup checks your system for compatibility issues.
Accept the End User License Agreement.
Wait while Windows 10 setup does one final check to ensure your system is ready.
Windows 10 setup will check if you have enough disk space. If you don’t, review the following article for instructions how to upgrade to Windows 10 Spring Creators Update on a system with limited space:
How to Upgrade to Windows 10 Spring Creators Update on a Drive with Limited Space
https://answers.microsoft.com/en-us/insider/wik...
Please note, you have the option of choosing what you would like to keep, which includes personal files, apps and settings.
This will be your screen for a little while. During the installation, your computer will restart several times.
After the first restart, Windows 10 setup will resume. You will notice the setup experience has once again been refined from the previous animated circle. This will be your screen for a while. When complete, Windows 10 setup will restart automatically.
Sign into your account.
Wait while Windows 10 completes application updates and post setup tasks.
That’s it, the Windows 10 Creators Update is installed.You can check Windows Update for latest updates, click Start > Settings > Update & security > Windows Update > Check for Updates.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.