New
#21
Lots of people have comptuers not running on the internet, or at least not always connected. Laptops, for instance, may only be connected on occasion. Regardless, the reservation is only used for the Windows Update process.... Once again, people who run systems that are not eligible for Windows update upgrades are still eligible for the free upgrade, but they won't be able to "reserve" a copy through the tool.
More than likely, Microsoft will have an online form that you can enter your Windows 7 or 8.x key and get a download link to an ISO file, or call up customer support and have them send you a DVD (for a shipping fee i'm sure).
Regardless, Microsoft can't really track what is and isn't activated in a way that would be accurate.. it might work for 90 or 95% of systems, but not everyone... and if it wouldn't work for everyone, it's basically useless.