High data usage from "system" in usage details

Try setting your connection as metered to see if it helps:
https://www.groovypost.com/howto/manage-windows...

I did that it managed to use 20 GB's today I had screenshotted earlier came back and compared, it went up.

open Start > Settings > Privacy > Background apps and disable all.

Open Start, type: problem reports
Hit Enter

Delete any failed or pending reports.

Alright I'll try that.

I suspect there are a couple of systemic issues that lead to your problem:
* all of the "telemetry" built in to Win10 to send back 'usage' information to MS.
* MS defaults to pushing a lot more advertising to Windows
* OneDrive
* Cortana - every search on your computer includes a internet search
* MS defualts to using your internet as an Windows Update file sharing service!

Here is a very high level look at what is causing your problem
https://www.infopackets.com/news/9781/windows-1...

Note: MS is infamous for resetting customizations back to "default" during updates. That means you have to check periodically to make sure they haven't been "improved" by MS update. Especially after the big semi-annual new feature "updates". To help with this periodic checking, it is a good idea to write down the changes you make, as you make them. Include instructions on how to find the settings (they can be tricky to remember when you only look at them every few months). I use a simple convention to document the path to commands, ie
Settings > Network & Internet > WiFi > Random Hardware Addresses > turn it on
Call it a "Change Log"



Here are some tips and tools to help throttle that data use down:
https://www.theregister.co.uk/2017/04/06/micros...

https://www.howtogeek.com/249254/how-to-stop-wi...

http://techgenix.com/top-windows-10-privacy-tools/

http://techgenix.com/windows-10-security-settings/

https://www.pcworld.com/article/2971725/windows...

http://www.makeuseof.com/tag/do-windows-10-crea...

https://www.techrepublic.com/article/windows-10...

http://www.zdnet.com/article/windows-10-tip-shu...

http://www.zdnet.com/article/windows-10-tip-tur...

https://www.youtube.com/watch?v=eoSg3fSB7PA&... - NoTrack and SpyBot AntiBeacon

https://www.pcworld.com/article/3039827/windows...

https://www.techrepublic.com/article/five-windo...



https://4sysops.com/wiki/windows-10-privacy-set...

https://docs.microsoft.com/en-ca/windows/config...