Move from a USB 3.0 (blue) port to a USB 2.0 port, as some older driver protocols prefer the slower interface for stability.
If your PC still won't see your phone after the 2.19.1.0 update, try these quick fixes: samsung electronics co. ltd. - usb - 2.19.1.0 update
This is a minor version update; previous versions were around 2.18.x and earlier. Move from a USB 3