Macromedia Flash 5 was discontinued in the early 2000s (Macromedia was acquired by Adobe in 2005). Adobe officially ended support for Flash Player on December 31, 2020 . Modern browsers and Windows 10/11 no longer support Flash due to serious security vulnerabilities.
I understand you're looking for Macromedia Flash 5 for Windows 10. However, I need to provide some important context first: