Got CL_INVALID_BINARY error when emulated HelloWorld example on Windows

It is still trying to use your GPU. The GPU should not be detected at all if the host code is compiled correctly; you probably have made some mistake in compiling your host code.

Still, try this:

host\src\main.cpp, line 136, change:

devices.reset(getDevices(platform, CL_DEVICE_TYPE_ALL, &num_devices));

with:

devices.reset(getDevices(platform, CL_DEVICE_TYPE_ACCELERATOR, &num_devices));

And see if it detects Altera's emulated device instead. If it doesn't find anything, then you have made some mistake in compiling/linking the host code.