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Whether you choose to upgrade for free or not, Microsoft downloads Windows 10 to your computer. This happens when you have enabled automatic updates on your computer. Of course, it will ask you first if you want to install it once the download is complete. However, if you wish, you can prevent Windows 8.1 / 7 from automatically downloading Windows 10 upgrade files to your computer by changing registry or group policy settings.
UPDATE : You can now reject the free Windows 10 upgrade offer yourself from the Get Windows 10 prompt.
If you are a system administrator who wants to prevent Windows 7, Windows 7 for embedded systems, Windows 8.1 and Windows Embedded 8.1 Pro Clients from downloading and updating Windows 10, you can do the following.
Use group policy
You must first ensure that the Windows update client mentioned on KB30808080351 is installed on your computer.
To delete the Windows 10 upgrade download, press Win+R to open the Run field. Type gpedit.msc and press Enter to open the local group policy editor.
Go to next setting:
Computer Configuration/Models/Windows Components/Windows Update Policy
Double-click Disable upgrading to the latest version of Windows via Windows Update and Enable this policy setting.
Click Apply and complete the process.
Using the Windows Registry
To delete the Windows 10 upgrade download, press Win+R to open the Run field. Type regeditit and press Enter to open the registry editor.
Navigate to the next registry subkey :
Enter 1 in the DWORD DisableOSUpgrade. If it doesn’t exist, create it.
This article shows how to completely block Windows 10 upgrades in Windows 8.1/7 using group policy or registry.
See how you can prevent Windows 10 from automatically updating your computer. These free tools help you easily block Windows 10 upgrades.