WinRAR Launch WinRAR and press "Ctrl-O" to open the Find Archive window. Use the integrated file browser to select the CAB file and click the "Open" button to open the CAB file in WinRAR.

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...

How to open RAR on a Mac with The Unarchiver app You can't click on a RAR file and open it immediately – you'll need an app to reverse the file compression so you can open the files inside.