I assume you mean CameraFTP VSS software, which can use a PC as a CCTV DVR system to save the cost of a DVR.
I just tested it on a Windows 2012R2 server, and it works fine without any issues. Do you use Windows 2012 or Windows 2012R2?
VSS is mainly tested on Windows 10 and 11, but it should work fine on Windows Server operating systems. Please make sure you install all latest Windows updates. If you still cannot get it working, please email us more detailed information. A screenshot showing the problem will be very helpful. In your case, we need to know: (1) Were you able to install the software? (2) Can the software be launched? (3) Can you add a webcam or screen recording camera? (4) If you use an IP camera, can VSS find the camera.
If you can install the software and launch it, then please watch this tutorial video on Youtube: https://youtu.be/LuRtCBLvy4E