Question

I have a common problem with Visual Studio 2010 and my C++ project. Some times ago Visual Studio started to show the “project is out of date” on every “F5” hit regardless if i change something or not. I have searched google and found many reasons, including this stackoverflow question that contains instructions on how to enable system logging. I have enabled system logging, and what i see here puts me into shock and awe:

[2104] Project 'projectname.win32.vcxproj' not up to date
because 'filename.h' was modified at 07/21/2011 09:02:54,
which is newer than '' which was modified at 01/01/0001 00:00:00. 

Any ideas that is this '' that was modified 01.01.01?

Answer 1

Does filename.h actually exist? Is filename.h listed in Solution Explorer? When a header has been deleted from disk but not removed from a project, the project engine will always attempt rebuild.