Starting with Visual Studio 2012, its default toolbox (v110) no longer supports Windows XP. Thus, you could create programs for Windows Vista and newer.
Visual Studio developers received a lot of protests from users because users have their own clients who are still using Windows XP. Thus, Visual Studio developers introduced v110_xp in Visual Studio 2012 Update 4, which also supports Windows XP.
With all the later versions of Visual Studio (2013 → v120, 2015 → v140), they continued this approach, so you have an additional set of tools for Windows XP and newer (v120_xp and v140_xp).
If you create programs that should only be used in Windows Vista or later, then you should use the default toolbox (without the suffix _xp). But if you need your programs to run under Windows XP, you need to use the toolbox with the suffix _xp.
David gausmann
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