Hello, so... - Device: Fujitsu Lifebook AH531 - OS: Windows Vista business 64bit After fresh installing and fully updating Vista with the VistaWUC patch (along with the server 2008 updates) I decided to, obviously, use daz loader to activate. Daz loader is giving me a pop up error ‘installation failed’ and ‘The serial wasn’t successfully installed’. Tried searching everywhere for a fix with no luck. Tried changing loader settings, no luck. So how can I fix this issue?