Warning: Avoid third-party “driver download” sites. They often bundle adware or outdated files. Always get drivers from HP’s official website.
The HP Laser MFP 137fnw holds up to 40 pages. In HP Scan software, set Source = Document Feeder and Page Size = Letter/A4. hp laser mfp 137fnw scan driver download top
Overzealous antivirus software (Norton, McAfee) often blocks the TWAIN driver from accessing the scanner port. Add hpscan.exe to your antivirus exception list. Warning: Avoid third-party “driver download” sites