Microsoft will start to give some customers the benefit of the doubt with an updated version of its software antipiracy tool, Windows Genuine Advantage Notifications. The company has added a new category to the tool - ‘indeterminate’ - for instances where it can't be sure whether the OS running on a user's PC is legitimate or not...

The issue has arisen partly because, through no fault of the customer, the wrong product activation key can sometimes be used to unlock a legitimate copy of the OS.