I removed the printer from Devices and Printers and I tried obtaining the driver entitled 'HP OfficeJet Pro 7740 Wide Format All-in-One series Basic Driver - IT Professional Use only (hey, that's me!!)' in the support section of HP's website for the printer. I decided to do this over on a separate Windows 10圆4 Professional PC with the exact same results as documented above, with Printing working, scanning working only when initiated from the HP Smart App. At this point (which I don't recall clearly) HP's software did allow me to download additional software to install or fix the issue and I decided that this was all too lengthy and complicated for a printer Install. I did recall that up to that point, everything checked out, inclusive of the driver. I did run it and it stuck on checking 'WIA SCAN' after about 25 minutes of scanning without completing. I went to HPs website to do research and I was directed to run HP Print and Scan Doctor for Windows. I was presented with a message which said 'Scan to Computer disabled, Please check with the Administrator that installed the printer'. Instead what I did was go into the settings of the Printer from via the HP Smart App to check scan settings. My initial look into this method was futile because things are now different, because it's different software. So I thought maybe I have to Enable 'Scan to PC' and set it to AutoStart from the Printer Software like in the good old days. At first, the computer on the LAN were not listed on the printer. The problem is when I try to do the Scan to PC/Computer option from the copier. Scans initiated from the HP Smart App for Windows 10 Professional 圆4 work well as expected. The printer installed and test prints are fine. I instead was directed to 'Install HP Smart' which I did. I went to HP's website to obtain what I hoped to be the 'Full Feature Software and Drivers' like in the older times. I removed her installed printer from Devices and Printers (not from Add/Remove Programs/Software) I disregarded her setup and decided to install the Driver and Software from scratch. I set the IP Addressing mode to Static (IPV4). I decided to standardize the setup as we do for printers: Static IP, Disable IPV6, did some initial Ping testing (1-6ms delay, no packets loss etc) She installed the printer herself and connected it to the LAN via Wifi and followed setup instructions that came with the paper - can print successfully but could not Scan to Computer. A client purchased a HP Officejet Pro 7740 to replace an older model Officejet Pro printer.

Hp print and scan doctor not working