

However, according to McAkins Online, adding a Windows 8 disc or ISO image in a PC drive after updating to Windows 8.1 will not work, as users will see the error message above. Also, users that upgraded to Windows 8 via DVD then updated to 8.1, they will need to use their Windows 8 DVD to go back to Windows 8 if needed." Neowin asked Microsoft about this issue and the company sent over word that there are two situations where users will need some kind of media (an ISO burned to a disc or USB Flash drive) to enable refresh or refresh: "OEM devices without W8 PBR (very few)" and "Users that installed via DVD." Microsoft added, "For Windows 8.1, users that upgraded to Windows 8 via online download (ESD), will need media when updating to Windows 8.1.

Installing the digital download version of Windows 8.1 does not provide a new ESD file, and as such, the ability to refresh or reset the OS after it is installed is eliminated. In very simple terms, installing Windows 8 creates a ESD file that allows users to refresh or reset their PC. The issue was first reported on McAkins Online, and it affects people who bought and installed a retail copy of Windows 8 on their PC, either electronically from or from a retail DVD disc or ISO image. Now there's word that some people who updated from Windows 8 to Windows 8.1 no longer have any refresh or reset options. We have already reported that Microsoft has pulled the Windows RT 8.1 update for unknown reasons.

The launch of Windows 8.1 on Thursday has not been completely trouble free.
