Although I doubt that there many who wish to upgrade to Windows 10 this late after release this is the way to get a genuine copy of Windows 10 after the free upgrade deadline.
1) Set your date to before July 28th, 2016. You should be able to see the free Windows 10 upgrade button in the system tray again. Hurr durr I am serious.
2) Microsoft set up a website for people with accessibility issues to get the upgrade after deadline. Just go to (https://www.microsoft.com/en-us/accessibility/windows10upgrade) and click Upgrade Now.
After you install Windows 10, don't forget disable tracking and analytics by using this tool (https://github.com/10se1ucgo/DisableWinTracking/releases). Confirmed safe.
1) Set your date to before July 28th, 2016. You should be able to see the free Windows 10 upgrade button in the system tray again. Hurr durr I am serious.
2) Microsoft set up a website for people with accessibility issues to get the upgrade after deadline. Just go to (https://www.microsoft.com/en-us/accessibility/windows10upgrade) and click Upgrade Now.
After you install Windows 10, don't forget disable tracking and analytics by using this tool (https://github.com/10se1ucgo/DisableWinTracking/releases). Confirmed safe.