Like the rest of the world, I'll soon be updating to Windows 10. Norton Ghost 15 can't be activated using the license key I have on a Windows 10 machine.
Looking back I find people had similar problems going from WIN 7 to Win 8.
Best of luck staying in business Symantec / Norton. When I invest in a piece of software, I expect it to last. The cavalier way Ghost users have been treated means that the replacement for Ghost will come from another vendor, who I hope will be a PARAGON of virtue.