Scanner Not Detected or Recognized Windows 11 Fix [2026]

Quick Answer: Scanner not detected due to missing WIA service or TWAIN drivers. Start Windows Image Acquisition service and reinstall scanner drivers.

Fix

Start WIA Service

Start-Service stisvc
Set-Service stisvc -StartupType Automatic

Reinstall Scanner Driver

Device Manager → Imaging devices → Uninstall → Scan for hardware changes

Test with Windows App

Search "Windows Fax and Scan" → New Scan

Check USB Connection

Try different USB port. Avoid USB hubs for scanners.

How Againly Helps

Againly runs check_scanner_stack to detect scanner configuration issues.

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