(N-1 policy). However, if you are looking for this specific legacy version to match an older operating system or hardware, here is the review and guidance on how to proceed. Adobe Help Center Legacy Download Status Official Channels
Install previous versions of Creative Cloud apps - Adobe Help Center Download Adobe After Effect Cc 2017 Mac
This release was a turning point for performance and 3D integration, though it has since been surpassed by modern multi-frame rendering. (N-1 policy)
on macOS 10.15 (Catalina) or later because it contains 32-bit components that Apple discontinued. It is best suited for macOS 10.10 (Yosemite) through 10.14 (Mojave). Review: After Effects CC 2017 for Mac on macOS 10
Adobe generally only supports and provides downloads for the two most recent major versions
originally hosted direct links, many of these "official" server links have been deactivated by Adobe. Compatibility Warning : CC 2017 will not install