It's basically this one: Arduino ISP
The arduino.cc download/drivers for my arduino ISP doesn't work, as it says unable to find drivers when selecting the driver folder.
Mine is the arduino.org version. Since you can no longer access the arduino.org website, you can't download the driver from there.
Luckily, I managed to find on a back-up the file "ArduinoISP_org_WindowsDriver.zip" from the original arduino.org website, and all is working well. It would be nice in future that this driver was available to download from the arduino.cc website in case I ever loose it, or if someone else needs it?