To fix the DirectX setup could not download the file, Please retry later or check network connection error, see this post.

To fix Install Failed, The installation is corrupt, Error Code IS-BV04 Epic Games Launcher error on Windows 11/10 PC, follow these solutions.

A .CAB file is a kind of package file, an RPM for Windows, if you will. If its corrupted, well, then there is a problem. Try and get another disk.