“new.h” or “ctype.h” is missing in Visual Studio 2017

Visual Studio has some bugs to not find install component properly. If you encounter this error, take a following step.

1, Launch Visual Studio Installer.

If it starts to update itself. The problem may be fixed. Just update it (not install any components).

2, Launch your Solution.

If Visual Studio failed to load projects properly, right-click the project in the Solution Explorer and select “Install Missing Components“.

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