I use Windows Vista 64-bit, and I've been enjoying using the beta versions, and release candidate, of Flash Player 11. I've been using the 64-bit ActiveX version, and it has worked excellently with IE9 64-bit. When I found out that Flash Player 11 was finally released, I quickly went to the download page to download it. When I got there, and noticed that Vista 64 is not supported, I was very disappointed. Why would Adobe do this, when the pre-release versions work perfectly fine with Vista 64?
although, it may state Win 7 32/64-bit, installation is not blocked if you attempt to install on 64-bit Vista.
Well, it will let me install 32-bit Flash on Vista 64, but not 64-bit Flash.