>>I have no problems running VFP8 and VFP9 IDE and any VFP8 and VFP9 compiled applications on Windows 8.1 Pro 64bit. Everything, including all ActiveX components, work perfectly. Never had even a single issue. And we have done this on multiple different machines, laptops, desktops, etc.
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>We were not that lucky, programs that should work 24/7 (and they do in 8.0) die constantly, no problems with ActiveX or anything, it is that they just get disconnected from the network (and none of the SMB fixes or workarounds solve this)

Doesn't sound like a VFP9 problem to me, more like a Windows or network driver problem.