Hi, this story starts with a HP6830 AIO printer that does not duplex scanning, nor does its driver packages proper TWAIN-driver-setups on Windows 10 (I virtually tried every way), but it installs a WIA driver, therefore NAPS2 can handle it, although it can not propperly handle the ADF (scans first page then reports the scanner is busy while all other pages are fed through the scanengine), finally I got my hand on the Win10 App HP Scan and Capture, at least ADF document scanning does work using this...