Time to call Samsung for their ideas as W10 1803 has to be lighting up their call center. They would have the best answers. Here I no longer scan over WiFi. Many reasons so I just scan to a memory stick as my printer+scanner supports that.
Easy Printer Manager returns IO error message when I try to scan to PC. Printer/Scanner says "not available" after trying to connect if I try scan to PC function from there. However, the basic scan using the printer in Windows Control Panel works. So I suspect a software problem. (Have tried changing cables and USB ports but same problem results). Printing and copying work fine.
Have downloaded and installed Samsung driver and EPM software twice to no avail. DriverEasys says I am up to date.
I think problem may have started after last Windows 10 Update done on 16th May. Any suggestions on what to try next welcome.

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