Win8.1 suddenly pops up "Windows upgrade is available for installation" What should I do?

  
                

These days, many Win8.1 users suddenly pop up the Windows update window, prompting "Windows upgrade is available for installation", this is the Win8.1 update patch? Or upgrade to Win10 system? Can we understand the start of the upgrade when we encounter this window?

According to the test, this is the upgrade push of Win10. If you click to start the upgrade immediately, then your system will be upgraded to Win10 system. If you want to operate, you still want to upgrade to Win10, if you don't want to upgrade. Close or point to schedule execution later.

The above are Win8.1 pop-up "Windows upgrade has been available for installation", what to do, if you do not want to upgrade Win10 you can close this window.

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