File Extension VC4 File Format Visual C++ 4 File VC4 stands for Visual C++ 4 File. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question What is the best software for my personal home business? Inventory App What kind of file is this?