Programming logic can be a strange thing sometimes. Although its 10 days since the Windows 10 Free Upgrade Offer ended, some users are still getting prompts to upgrade. A participant on the Microsoft Community Forum posted details of an annoying message popping up every time she started her computer.
 

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Could you post a screenshot of what you are seeing? Because I am not aware of any such pop up.

Here it is.  It comes up EVERYTIME I boot up my computer.  Very annoying, to say the least.

 

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Microsoft did promise to remove the Get Windows 10 through a future software update, the software firm just did not say when. Regardless of the imposed deadline, users can activate Windows 10 against existing Windows 7 or Windows 8/8.1 product keys. In fact using the Media Creation Tool or Upgrade Assistant to upgrade older versions still works. In fact, someone confirmed upgrades from as far back as build 10130 will work. If you really want to pass up on the upgrade offer, here are some solutions you can try:

The best way to defer the Windows 10 upgrade is by using third party tools. They are easy to use and are faster.

Option 1: How to Disable the Get Windows 10 Update GWX App Completely

Option 2: Stop the Windows 10 Upgrade with Never 10 or the GWX App Itself