I updated up until they dropped that stealth Win10 service pack. I had to hunt for that downloaded update and deleted it. Then I stopped updating.
Look through the downloaded update list for the KB3035583 and KB2976978 updates.
Right click each update and click Uninstall.
I don’t have an update list because I don’t accept any updates from MSFT. Updates are turned off.
And, I’m on a metered connection. MSFT updates would cost me $$.
I think the days of MSFT trying to force Win 7 users to upgrade to Win 10 are over. Nevertheless, I run GWX Control Panel to prevent those downloads