Date: 2015aug17 OS: Windows8 Keywords: OSX Q. How do I stop those Windows 10 nag messages? A. There is a program called GWX.exe that runs all the time (!) that produces these messages. Using Task Manager (you can get it with Ctrl-Alt-Del) stop it. Then so it doesn't start again, rename its folder:

cd c:\windows\system32 rename GWX GWX.HIDE

You may need to take ownership. And there is a registry key so a futue update won't replace it:

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Gwx] "DisableGwx"=dword:00000001