Starting in May 2016, upgrading to Windows 10 has become somewhat more aggressive: users receive a message that the upgrade process will begin after a certain time - “Your upgrade to Windows 10 is almost ready,” and then the computer or laptop is updated. About how to cancel such a scheduled update, as well as disable the upgrade to Windows 10 manually, see the updated article How to refuse to upgrade to Windows 10 .
The way to refuse updating with editing the registry settings and then manually deleting the update files continues to work, however, given the fact that for some users such editing may be difficult, I can recommend another (in addition to the GWX Control Panel) simple free program Never 10 allowing you to do this automatically.
Using Never 10 to disable updates
The program Never 10 does not require installation on a computer and essentially performs all the same steps that are described in the instructions above to refuse to upgrade to Windows 10, only in a more convenient form.
After starting the program, it will check the availability of already installed updates of the current Windows 7 or Windows 8.1, which are necessary in order to be able to cancel the update.
If they are not installed, you will see the message “An older Windows Update is installed in this system”. If you see such a message, click the Install Update button to automatically download and install the necessary updates, then restart the computer and restart Never 10 again.
Further, if updating to Windows 10 is enabled on the computer, you will see the corresponding text “Windows 10 OS Upgrade Enabled for this system”.
You can disable it by simply clicking on the “Disable Win10 Upgrade” button - as a result, the registry settings necessary to disable the update will be recorded on the computer, and the message will change to green “Windows 10 OS Upgrade is disabled on this system” (Updating to Windows 10 is disabled on this system).
Also, if the Windows 10 installation files have already been downloaded to the computer, you will see an additional button in the program - “Remove Win10 Files”, which deletes these files in automatic mode.
That's all. The program does not have to be stored on the computer, in principle, a single operation is enough so that the update messages do not bother you anymore. However, given how Microsoft is constantly changing windows, procedures, and other issues related to installing Windows 10, it’s difficult to guarantee something.
You can download Never 10 from the official developer page https://www.grc.com/never10.htm (while VirusTotal has one detection, I assume that it is false).