Inside the PE header of all executables, there is something called DLL Characteristics which contains a set of flags that could tells Windows a little more about the application. You can view all the flags by using dumpbin.exe /headers <targetbinary>. This applies to more than just .exes, such as .ocx, .dll, etc. Sometimes, you might want to change a dll characteristic. To do that, just run link.exe /edit /dynamicbase:NO <targetbinary>.