Next, open File Explorer using Windows + E and go to the location where the source CAB files are present. Now, select one or more CAB files and press the right-click button on the selected files.

To convert a folder to a CAB file, use the Windows built-in tool by running the makecab command in Command Prompt. First, open Command Prompt, then navigate to the folder’s location.

I have an cab file here created with Installshield (ver 5.5 I think). Usually winzip opens these types of things, but I get an incompatible version message.

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.