Dependency Walker is a utility that scans any EXE, DLL, OCX and SYS file and builds a hierarchical tree diagram of all dependent modules. Dependency Walker lists all the functions exported and called by the modules. It detects many common application problems such as missing modules, invalid modules, import or export mismatches, circular dependency errors, mismatched machine types of modules, and module initialization failures. The program also displays the minimum set of required files, along with detailed information about each file including a full path to the file, base address, version numbers, machine type, and debug information.