Read what to turn off at https://www.howtogeek.com/224981/how-to-stop-windows-10-from-uploading-updates-to-other-pcs-over-the-internet/
We've used Hughes.net 10GB/mo for many years and have never used up the entire 10GB in a month, only 6 or 7 GB at the most. Recently we upgraded to new sat Gen5 with same 10GB/mo package. This increased the download speed 4x and works well. However, with no change in usage habits we are now using the entire 10GB in 15 days! Around the same time as the upgrade we got a new Samsung smart TV, which we have not connected to the Internet so I don't know how that could be suspect. From the Hughes.net modem we run to a TP-Link router then to one hard-wired PC and one wireless PC. We don't download movies, do gaming or any other heavy lifting, just normal browsing and some social media. Our computer habits haven't changed for years but suddenly our bandwidth usage has more than doubled so I'm thinking there must be a rogue program doing constant updates or some other giant sucking sound going on. I have HiJackThis but they are not checking logs at this time. Ran Malwarebytes on one computer with no threats shown and will check the other computer today. I am not a geek and any suggestions for solving this mystery would be appreciated.

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