Question

I have a (com) c++ project, which uses a (.net) c++ dll. The project was compiling and running ok.

Now, all I did was make changes to the dll, and I’m getting a fatal error c1083- cannot open include file stdafx.h – when recompiling my (com) project.

What can this mean?

Answer 1

Look for your stdafx.h. Here are the possibilities:

1. If it isn’t missing, try restarting you machine. You could also use sysinternals’ handle.exe to find out who’s holding that file.
2. If it is missing, create it.
3. On the other hand, it may be possible that your project did not originally use pre-compiled headers and the option was turned on in error. So, switch off the pre-compiled header option in project properties.