Directly downloading the Adobe After Effects CC 2018 (version 15.x) offline installer is complex because Adobe has removed most legacy direct links from their servers . Officially, Adobe follows an N-1 support policy
Adobe has officially moved to the subscription model. While offline installers for 2018 are still available through various archives, the safest way to get After Effects is through an Adobe Creative Cloud subscription , which allows you to download older versions directly from the official app manager. To help you get started, How to fix common installation errors on Windows 10? Where to find free templates for motion graphics? Directly downloading the Adobe After Effects CC 2018