A window inviting me to upgrade pops up every time I wake up the computer after log-off or sleep. Solutions found on the internet do not work because I cannot find 'KB3035583' on Windows Update to hide it; or 'gwxlaunchtryprocess' or 'refreshgwxconfig' on Task Scheduler to disable it; or a GWX folder in C:\Windows\Sys... to delete. At no stage have I told Microsoft that I have any interest in upgrading to Windows 10. I don't want to tell them that I want to upgrade "later" in case they use that as an excuse automatically to install it at some stage.