Quoting KB#592:


Quote:

We are sorry, but according to http://www.microsoft.com/games/pc/flightsimulator.aspx FS2004 (FS9) is not Windows Vista/Windows 7 product. Therefore none of our expansions for FS2004 (FS9) is Windows Vista compatible product either. Although you may try to activate our FS9 product Manually Offline. Please note as stated at the product description page we do not support technical issues appeared on systems that do not conform to the minimum system requirements.

Unfortunately we have nothing to add.