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HP Scanjet scanners - Initialization or 'scanner not found' error messages received when scanning with a USB connection in Windows


The HP Scanjet scanner stops working or has never worked correctly when using a USB connection. When scanning using HP Director software or HP Precisionscan software, one or more of the following initialization error messages, conditions, or other symptoms might be received:
  • The computer cannot communicate with the scanner.
  • The scanner could not be found.
  • An internal error has occurred.
  • Sorry, scanner could not be initialized. (Scanner not found.)
  • Error! An error occurred communicating with the scanning device. Please ensure that the scanning device is connected properly and try again.
  • hp scanning "An Unexpected internal error has occurred. Close the program, and then try one of the following: - Restart the program. - Restart the PC and then try again. - Reinstall the scanning software and try again."
  • hp scanning "The scanner could not be initialized because it was not found. Please check if the scanner's power cord and cable are properly attached and plugged in. Refer to HP service and support information on the Web for more help with this error. The scanning software may be installed improperly, or there may be a device conflict."
  • hp scanning "The scanner could not scan. If 22 is blinking in the scanner's LCD, the problem is with the TMA; see Troubleshooting the scanner electronic help. If 22 is not blinking, please call HP Customer Support when the TMA is not attached to the scanner."
  • "Failure to communicate with scanner. Be sure that the scanner is on and properly connected [1215]."
  • After the computer goes into standby mode or is restarted, then the scanner cannot communicate.
  • HP Director does not have a scan option and only has options to View and Print or Help.
  • In the Windows Device Manager, the HP Scanjet scanner might not display or it might display in any of the following ways:
    • As the Scanjet model number under the Imaging Devices category.
    • As an Unknown Device under the Universal Serial Bus Controllers category.
    • As an Other Device under the Other Devices category.
    • As the Scanjet model number with an "!", or "?" under the Imaging Devices category.


Follow the steps below in the order presented until the issue is resolved.

Step one: Check compatibility

Make sure that the scanner is supported in Windows 10. Go to Scanners not supported in Windows 10.
If your scanner is not supported, you will need to use a third-party scan software solution, or consider an upgrade to a newer scanner that will work with the newer Windows operating system.

Step two: Run a diagnostic utility

Download and run HP Print and Scan Doctor  to automatically diagnose and resolve printer hardware and connection issues.
If the issue persists, continue to the next step.

Step three: Check the connections

  1. Disconnect the power cord from the scanner, wait 5 seconds, and then reconnect the power cord.
  2. Make sure that the power cord is connected directly to the power outlet and remove any extension cords or power strips.
  3. Make sure that the USB cable is properly connected to the USB port with the USB trident symbol facing up.
  4. Remove any docking stations, USB hubs, or port extensions when checking for communication and connect the scanner directly to the computer.
  5. Remove all other USB devices from the computer except for the keyboard and mouse.
  6. Try connecting the scanner to a different USB port on the computer.
  7. Try using another compatible USB cable (if available) to connect the scanner to the USB port on the computer.
  8. Try again to scan.

Step four: Check the system resources

Make sure the minimum system resources are being met.
  1. Make sure that the computer meets the minimum system requirements listed on the scanner box or go to HP Scanjet Scanners - Minimum System Requirements.
  2. Temporarily disable all software or programs that automatically start when the Windows operating system is started.
  3. Try again to scan.

Step five: Uninstall the HP Scanjet software

  1. Open the Control Panel.
  2. Open Programs and Features or Add\Remove Programs.
  3. Right-click the software option for the HP Scanjet scanner in the list of installed programs.
  4. Select Uninstall or Remove.
  5. Follow the onscreen prompts to complete the HP Scanjet scanning software removal.
  6. When prompted to restart the computer, select No.
  7. Continue to Step six: Reinstall the HP Scanjet software.

Step six: Reinstall the HP Scanjet software

  1. Make sure that you have the HP Scanjet scanning software installation CD available or download the latest version of the HP Scanning software from www.hp.com/support. For recommended drivers and links to download pages, go to Scanners supported in Windows 10.
  2. Disconnect the scanner from the power outlet and from the computer.
  3. Restart the computer and wait for the computer to reboot.
  4. Insert the HP Scanning software installation CD in the CD-ROM drive, or navigate to a downloaded version of the HP Scanning software and double-click it to launch the installer.
    If the installation screen does not open after inserting the HP Scanning software installation CD in the CD-ROM drive, click Start, and then Run, type D:\setup.exe, and then click OK (where D:\ is the CD-ROM drive).
  5. Follow the onscreen prompts to complete the installation.
  6. After the scanning software has been installed, click Yes to restart the computer.

Step seven: Reconnect the HP Scanjet scanner

  1. When the computer system has fully restarted, connect the scanner to the computer using the USB cable.
  2. Connect the power cord from the scanner to the power outlet.
  3. Wait while the scanner is detected and the scanner drivers are reloaded.
    You might need to restart the computer after reloading the drivers.
  4. Try again to scan.
The HP Scanjet scanner should now function correctly.






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