[jlawer]

Its a boot loader, It runs while the system is in real mode (16bit), before windows itself has booted.

[taspeotis]

The compiler is 16-bit [1]. It won't run on 64-bit Windows.

So if you have a Windows-based build server, it's probably running Windows Server 2008 or later. Which is 64-bit only.

You can run it on a recent 32-bit version of Windows, but client editions only.

And in the next year or two I imagine Windows 9 or 10 going exclusively x64/ARM.

[1] http://en.wikipedia.org/wiki/Visual_C%2B%2B

[A_Non_eMouse]

I meant MSVC 1.52c is 16-bit.