An example program to show that FormatMessage() cannot properly return the text for an exception code.

print-exception-text.cpp

#include <windows.h>
#include <stdio.h>

int main()
{
  HMODULE hMod = LoadLibrary("ntdll.dll");
  char buf[1024];

  DWORD id = 0xc0000005; // code for access violation

  DWORD res = FormatMessageA(
    FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS,
    hMod, 
    id,
    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
    buf,
    _countof(buf),
    NULL);

  if (res == 0)
    printf("error code %x not found\n", id);
  else
    printf("error code %x: %s\n", id, buf);

  return 0;
}

The text is always just "The instruction at 0x", but it should be "The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.".