https://www.tomshardware.com/news/microsoft-directx-9,141.html
Microsoft DirectX 9.0c available | Tom's Hardware
Jul 27, 2004 - DirectX 9.0c in finaly available. Microsoft put the Redistributable and the SDK Summer 2004 update on its servers. The web installer is not here yet.
directx 9 0ctom smicrosoftavailablehardware