Windows 10 Upgrade after deadline

Yes, you can go back to Windows 10 one of two ways.

Perform a direct clean install or upgrade again using the Media Creation Tool.

Step 1: How to download official Windows 10 ISO files 

Step 2: 

• How to: Perform a clean install of Windows 10

Option 2:

Download the Media Creation Tool Now

Right click the MediaCreationTool.exe file then click Run as administrator.

Note: How to Verify If You Downloaded or Installed the Latest Version Windows 10

Accept the End User License Agreement:

Select the option Upgrade this PC now if you want to upgrade right away,

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

  A new option has been added to the setup screen for users reinstalling Windows 10 on a previously installed and activated system. If your system has a Digital License attached to it, Windows 10 will automatically upgraded:

When you upgraded from a previous version of Windows or receive a new computer preinstalled with Windows 10, what happened is the hardware (your PC) will get a digital entitlement, where a unique signature of the computer will be stored on Microsoft Activation Servers. The Windows 7 or Windows 8 genuine license you were previously running will be exchanged for a diagnostics key.

Anytime you need to reinstall Windows 10 on that machine, just proceed to reinstall Windows 10. It will automatically reactivate. You will prompted to enter a product key a couple times through the installation, click I don't have a key and Do this later.

There is no need to know or get a new key, but if you have issues with Digital Licensing or the Activation Troubleshooter, you can utilize an existing Windows 7 or Windows 8/8.1 product key you already ownto reactivate if necessary. or use the reset function in Windows 10.