All-in-one printers that can both print and scan sometimes develop a split personality — printing works fine, but scanning does nothing. The most common culprits are a missing scan driver, a firewall block, or the Windows Image Acquisition service not running.

Step 1: Check the Windows Image Acquisition (WIA) Service

Scanning in Windows depends on a service called Windows Image Acquisition. If it's stopped, no scanner will work.

  1. Press Win + R, type services.msc, and press Enter.
  2. Scroll to Windows Image Acquisition (WIA).
  3. If it shows Stopped, right-click it and choose Start. Also confirm its Startup type is set to Automatic.

Step 2: Install the Full Driver Package

Many people install only the basic print driver and don't realize the scan functionality needs a separate or full software package. Visit your manufacturer's support page, search for your printer model, and download the full driver and software package (not just the basic print driver). HP calls this the "full feature software"; Epson and Canon have combined driver installers.

Step 3: Try Windows Fax and Scan

Open the Start menu and search for Windows Fax and Scan. Click New Scan. If your scanner appears and works here, the hardware is fine — the issue is with your third-party scanning app. If it doesn't appear here either, the problem is deeper.

Step 4: Check Your Firewall (Network Scanners)

If the printer is connected over Wi-Fi or Ethernet, Windows Firewall or third-party security software may be blocking the scan protocol. Go to Control Panel > Windows Defender Firewall > Allow an app through firewall and make sure your printer's software is allowed on both private and public networks.

Step 5: Use the Manufacturer's Scan App

  • HP: Open HP Smart and use the Scan tile.
  • Epson: Use Epson ScanSmart.
  • Canon: Use IJ Scan Utility.
  • Brother: Use ControlCenter4 or iPrint&Scan.

If scanning works in the manufacturer app but not in another program (like Paint or Word), the issue is with how that other program communicates with the scanner. Try selecting the scanner source inside that app under File > Import or Insert > Scan.

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