Therefore, some CD drive manufacturers did not build Green Book format support into their CD drive hardware. These CD drives cannot read Green Book format. They must be replaced to play Green Book CDs. Panasonic and Matsushita drives typically do not support Green Book. Unfortunately, many of these drives were distributed by Creative Labs with their multimedia upgrade packages.
Most CD drives are.
The most likely reason is that the drive simply can't read the disk. As long as the CD drive hardware could read Green Book, you can playback a Green Book CD without problems. Windows 3.1 was such a nice, friendly operating system. So, Green Book CDs are specifically not supported in Windows 95. That doesn't mean you won't be able to use Windows 95 to play Green Book in the future.