If you're determined to avoid Windows 10 you've simply closed that pop-up by clicking the little X in the top right corner, by now it's probably second nature. This week Microsoft took advantage of this by changing the pop-up so that clicking the X to close it implies your consent to upgrade, tricking even more people into installing Windows 10 against their wishes.
I doubt it's the same pop-up. This one specifically states: 'Based on your update settings you're scheduled to upgrade on ...'. Just closing the pop-up wouldn't change this fact.
Can't really empathise with people complaining about this.
It isn't the same popup, because Microsoft has continually changed it over the past year. They have done everything they can to ignore and circumvent user preferences during this whole process.
It started with OK and cancel, then changed to Upgrade Now and Upgrade Later, with the close button being the only way to decline. Now it is being pushed as an automatic upgrade with a deliberately small and unobtrusive cancel link instead of a prominent button. Also, if you are away from your PC, it will happen automatically.
Don't disable the Close button. Having a Close button helps users stay in control by allowing them to close windows they don't want.
The Close button on the title bar should have the same effect as the Cancel or Close button within the dialog box. Never give it the same effect as OK.
It does seem that, on more than a few occasions, Microsoft has gone out of its way to bypass workarounds people have found that disable the GWX app, from resetting registry settings to re-releasing KBs that were explicitly declined and hidden by users.
If you're determined to avoid Windows 10 you've simply closed that pop-up by clicking the little X in the top right corner, by now it's probably second nature. This week Microsoft took advantage of this by changing the pop-up so that clicking the X to close it implies your consent to upgrade, tricking even more people into installing Windows 10 against their wishes.