Printers & scanners

Scanner not detected by the computer

A scanner that the computer can't find is usually a driver, connection, or software setting issue on an all-in-one printer, not a failed scan mechanism.

Difficulty
Easy
Time
15–30 minutes
DIY cost
$0
Pro cost
$70–$120

Symptoms

  • Scanning software doesn't list the printer/scanner as an option
  • Error message says 'No scanner found' or similar
  • Printing works fine but scanning doesn't
  • Scanner worked before but stopped after an update

Likely causes

  • CommonScanner driver or software not installedScanning often needs its own driver component separate from the print driver.
  • CommonPrinter not connected properly (Wi-Fi, USB, or network)If the base connection is unstable, scanning specifically can fail even if printing still works.
  • CommonWrong scanning app selectedWindows Fax and Scan, the manufacturer's app, and third-party software can each behave differently, and one may not see the device while another does.
  • PossibleScanner service or feature disabled on the printerSome network printers need 'Scan to Computer' or a similar feature explicitly enabled.

What to do

  1. Confirm the printer is properly connected to Wi-Fi or USB and shows as online in the printer's device list.
  2. Reinstall the full driver package (not just 'print driver') from the manufacturer's website, which usually includes scan components.
  3. Try the manufacturer's dedicated scanning app instead of a generic OS scanning tool, or vice versa.
  4. On the printer's own control panel, check for a 'Scan to Computer' or 'Enable Scan' setting and turn it on if present.
  5. Restart both the printer and computer after reinstalling drivers.
  6. If using USB, try a different cable and port; if using Wi-Fi, confirm both devices are on the same network.
  7. Check Windows Device Manager or Mac's printer/scanner list to confirm the scanner component specifically is listed, not just the printer.

Tools and parts

  • None

When to call a pro

If the scanner still isn't detected after a full driver reinstall and confirming the connection, and printing works fine, the scanner module itself may have a hardware fault needing professional service.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.