I've been trying to get the Windows 10 icon into my taskbar for about a week.
Today my grey cells worked and I realised that it might be because my machine is part of a domain at home (a Windows 2012 server R2 setup as a file server and 4 windows 8.1 machines - 2 laptops and two desktops).
Removing one laptop from my domain and yes the icon appeared and I've now reserved the update. But what do I do about my other machine? I'm a home user not a business.
The only thing GWX does is enable Windows Update to download Windows 10. It doesn't do anything else. The upgrade itself is done when you actually do the upgrade. Either by Windows Update or by ISO. You can update from the ISO, without doing a clean install.
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