How to Disable Windows 10 upgrade notifications
Microsoft has several KB articles that describe how to manually disable Windows 10 update notifications. Unfortunately, the process is cumbersome and shame on Microsoft for not providing a Mr.Fixit utility that could disable the notification, automatically.
But, Steve Gibson has also provided a utility, Never10, which will perform these task for you. Just select the proper OS version you are currently running, download, and run the utility.
If you are curious about Microsoft answers to “How to disable Windows 10 upgrade notification, check out the articles below.
This answers directly from Microsoft (KB – Knowledge Base articles)