Code:#include <windows.h> using namespace std; char my_mutex[] = "c0D3718yD4n73"; int main(int argc, char *argv[]) { HANDLE xetum; xetum = CreateMutex(NULL, FALSE, my_mutex); if (GetLastError() == ERROR_ALREADY_EXISTS) ExitProcess(0); //////// Mutex ende ///////////// // mach was .... system("PAUSE"); return 0; }