Are you still using W7 or W8.1, and do NOT want to go to W10, at least in the near future? If so you may like to investigate a free program that will stop Microsoft automatically installing the upgrade, and control the constant downloads that MS will continue to send.
For background on the problem, open and read this Techradar article and maybe google 'GWX Control Panel' for the latest situation.
If you then want to check or use the 'Mayfield' program mentioned in that article, go to https://ultimateoutsider.com/downloads/ and click on: GWX Control Panel (formerly GWX Stopper). It is free, with donations if one likes the program. Check it out yourself, but if you want to manage Microsoft's overly enthusiastic attempts to get you to upgrade to W10 this could be just what you need.