Posted by John Haine on 01/08/2016 11:58:44:
Richard, I'm not sure what you're saying about GWX? I installed this a few months back and have never been bothered by Win10 again. It seems to use 772k of memory and 0% of CPU so what's the issue? I've never had to disable it, and indeed never would! Especially after seeing this item in El Reg this morning.
Hello John, I presume you installed this File as an Update?. It is a file that was sent out in a Windows Update last year to promote Win 10 Upgrade….- Link .
With this irritating random Win10 'Pop Up' living in my System Tray, I was ending the Process via the Task Manager daily (other methods were available).
Having done a Complete scan and then a Clean Install of Win 7 back in March, all was fine then.
After some 48 essential Updates to bring it up to date, I noticed the CPU Cooling Fans kicking in as soon as I logged on to the Interweb caused by the memory usage increase being unstable and inconsistent.
No Malware or bugs causing it.
Found issues existed with problematic/updates and significant CPU/Memory usage by Svshost (system).
When I checked the services for it in Task Manager, I found it was WUAUSERV causing it. Found some help online which temporarily sorted it, but still came back with high usage.
This all stopped on the 30th July, day after end of Free Win U/Grade and the GWX.exe disappeared as well! .
So like I said, my machine is now fast, clean and only very lighty 'Sips' at the CPU & Memory usage with no Fans running. 
Regards