Error (active) E2998 PCH warning: an unknown error occurred. An IntelliSense PCH file was not generated.

Error (active) E2998 PCH warning: an unknown error occurred. An IntelliSense PCH file was not generated.

FlagEffect C:\Demo_MFCGL\LessonsCode_2010\LessonsGLCode_2010\lesson11\FlagEffect\11_FlagEffectDrawInit.cpp 1

1. IntelliSense PCH Warning not going away

I have a ATL C++ project and I don't have any includes in one of my C++ source files.

When I try to compile, I am receiving a PCH warning:

A Solution:As mentioned in this answer, closing and re-opening the solution worked fine for me.

2. PCH Warning: header stop cannot be in a macro or #if block - Visual C++ 2010 Express SP1

PCH Warning: header stop cannot be in a macro or #if block - Visual C++ 2010 Express SP1.

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