KernSafe Technology

I have just performed a clean install of 10.13 on a Mac mini server, installed a fresh download of SuperSan X & was able to connect to the San from windows, create new target etc.
MacOS then updated to 10.13.4 & now I get the error

Connect to Server, error message: No connection could be made because the target machine actively refused it.

Any pointers please?

Please run the command and tell us what it shows:
netstat -an | grep 3260
and
netstat -an | grep 3261

If nothings shows, please use the following command to start supersan service:
launchctl start /Library/LaunchDaemons/com.kernsafe.supersan.x.plist

If the problem persists, please let us know or direct get help from [email protected]