After Effects can freeze. How do I know if After Effects is frozen? Your mouse cursor is spinning or loading indefinitely.
Or the After Effects window might become white indefinitely
Contact a live support chat to see if it’s a common issue or you can send us memory dump files right away. This article explains where you can find memory dump files.
For Windows
Open the Task Manager (Press Ctrl+Alt+Delete – Start Task Manager) – Details tab and search AfterFX.exe
If you do not see a Details tab, go to the Processes tab. Right-click on the AfterFX.exe and select Create dump file.