How to fix visual studio 'projects out of date' message each time I run it

Question

I have a visual studio (2005) solution file with 70 projects.
Each time I press F5 to run it, it tells me that 4 of the projects are out of date, and asks me if I want to re

Answer 1

A quicker way than John's log verbosity in Visual Studio 2013, is to open the Solution Explorer's project tree; the files which were not found won't have the little triangle in front of the filename (with which you normally can see a list of symbols in that file).

Remove those files and for me, the AlwaysCreate message went away (you only see 'AlwaysCreate' when the verbose level is set to at least 'Normal').