: The Internet Archive hosts a preserved version of the game for historical and streaming purposes, as it is no longer supported by its manufacturer.
Microsoft Flight Simulator 2004: A Century of Flight (FS2004) is officially discontinued and not available for a direct "free download" from Microsoft. However, because it is over 20 years old, it is often treated as "abandonware" and can be acquired through physical used copies or legacy digital archives. Methods to Acquire FS2004 Microsoft Flight Simulator 2004 Free Download
: The most reliable way to own the game is to purchase a used 4-disc set. You can find original sets (sometimes in a collectible tin) on marketplaces like eBay for around $20.00 or discounted sealed copies at Mercari for $11.70 . : The Internet Archive hosts a preserved version
: Sites like MyAbandonware list FS2004 as a legacy title available for download, though these are not official distribution channels. Modern System Compatibility (Windows 10/11) Methods to Acquire FS2004 : The most reliable
: You must set the fs9.exe to run in "Windows XP (Service Pack 3)" compatibility mode and "Run as Administrator" via the file properties.
: It is highly recommended to install the Flight Simulator 2004 Update v9.1 from community sites like Fly Away Simulation to fix stability bugs that occur on modern systems.
: Because modern Windows versions do not support the SafeDisc DRM found on the original discs, you will likely need a No-CD patch to launch the game without the software throwing an "Access Denied" error. Why Pilots Still Play FS2004