is widely regarded by automation veterans as a "sweet spot" release. It provided significant stability improvements over the base V8.0 release and earlier service packs. Specifically, V8.0 SP4 introduced robust compatibility with Windows 7 (32-bit and 64-bit), which was a major transition point for industrial PCs moving away from Windows XP. For many engineers maintaining PCS 7 V7.1 systems, upgrading CFC to V8.0 SP4 is a necessary step to migrate engineering stations to newer hardware without upgrading the entire PCS 7 version to V8.0 or V8.1.
The software is primarily distributed via the Siemens Industry Online Support portal.
For maintaining legacy projects, you might also run CFC v8.0 SP4 inside a virtual machine (VMware or VirtualBox) with a saved Windows 10 image.