Roland officially discontinued support for the SV-8 long before Windows 10 was released. There are no "official" signed drivers for Windows 8, 8.1, or 10.
Here is the only reliable method to get your Stika SV-8 cutting again on Windows 10. First, let’s manage expectations. You cannot simply download a Setup.exe file from Roland’s website and install the SV-8. That software was written for Windows 95/98/XP. roland stika sv-8 driver windows 10
This works for basic vector cutting. You will lose advanced features like pausing mid-cut or optical registration marks. For straight contour cuts, you’ll need an older machine running Windows XP. Roland officially discontinued support for the SV-8 long