can't build plugin on windows

when trying to compile a plugin on windows, I’m getting the following
error in rb_plugin.h:

1>C:\Program Files (x86)\Xojo\Xojo 2016r2.1\Extras\PluginsSDK\Includes\rb_plugin.h(22): fatal error C1083: Cannot open include file: ‘stdbool.h’: No such ile or directory

on this line:
#include <stdbool.h>

I have a full version of visual studio installed, but this file doesn’t exist
anywhere on my system.

do folks just not build plugins on windows these days?

Older Visual Studio?

I think this is only in Visual Studio 2013 and newer.
In C99 mode.