Adobe After Effects 2021 V18.4.1 Apr 2026

Are you trying to install this specific version or troubleshooting a project in it?

I can provide specific step-by-step instructions based on your answer. After Effects System Requirements - Adobe Help Center Adobe After Effects 2021 v18.4.1

Intel 6th Generation or newer/AMD Ryzen 1000 series or newer (AVX2 support required). 3. Essential Workflow Are you trying to install this specific version

Use File > New > New Project . Set composition to 1920x1080 (HD) or 3840x2160 (4K) at 24/25/30fps. Click and drag from rulers to set guides,

Click and drag from rulers to set guides, or use Cmd/Ctrl + ; to toggle visibility. 4. Tips for Stability (v18.4)

Ensure File > Project Settings > Video Rendering and Effects is set to "Mercury GPU Acceleration". To make this guide more useful, let me know:

Press Spacebar to RAM preview. Drop resolution to "Half" or "Quarter" if playback is slow.