I recently got a new shadow after being away and letting my last one expire. I went to go change the background and it said I needed to activate windows. When I got to the page to activate windows, it said my key was previously used on another device.
Additionally, there were a number of websites I was trying to use, and a few of them were telling me I was banned, or IP blocked from the website. I've tried another web browser, didn't work. Tried turning on and off some virus settings and such, didn't work.