Title: Step 2 Redetect the Scanner in Windows
Article ID: VIS1052
Updated: 12/21/2005
Operating Systems: Windows XP / 2000 / Me / 98
Scanner Models: Visioneer Flatbed: 9520, 9420, 7400, 9320, 9220, 9120, 9020, 9000, 8900, 8800, 8700, 8600, 8100, 7700, 7600, 7300, 7100, 6600, 6400, 7600, 6200, 6100, 6000, 5800, 5600, 5300, 4800, 4500, 4400, 3300, 3100, 3000, PaperPort OneTouch
  Visioneer SheetFed: XP300, XP220, XP200, XP100, RoadWarrior (RW120, PRW120), StrobePro, PaperPort Strobe, PaperPort IX, VX, MX
  Visioneer ADF: XP470, XP450, PT430, PT680, PT780, 9750, 9650, 9450, 8650
  Xerox Flatbed: X6400, X7600, X4800, X2400
  Xerox SheetFed: TS100, CS200
  Xerox ADF: DM250, DM250L, DM252, DM262, DM262i, DM272, DM150, DM152, DM162, DM510, DM515, DM520, DM632, DM752
 
Symptom:
 
You are getting "Scanner not found", "Unable to connect with scanner" or "Problem Communicating with the TWAIN Device" after installing the scanner driver and the PaperPort scanning software.
 
Solution:
 
This is the second in a series of 6 steps. Additional links to other troubleshooting steps are at the end of this article. You may wish to print these instructions for your reference.

Some of the "Scanner not found" errors occur due to Windows not properly loading the driver after attaching it to your computer. This step will also resolve the problem if the scanner was plugged in PRIOR to installing the software.

Open the System Properties for Windows:
Right-click on the "My Computer" icon then left-click on "Properties" from the dropdown menu (if you do not have "My Computer" on your Windows desktop then you will find it in your Windows "Start" menu).

Note: After performing the above, you will immediately see which Windows Operating System you have installed, please follow the steps below appropriate to the version you have installed.
 
Windows 2000 or XP Users:

Section 1: If you see Imaging Devices in the Device Manager:
  1. Click on the "Hardware" tab in the System Properties window
  2. Click on the "Device Manager" button
  3. Click on the "+" next to "Imaging Devices"
    1. If you do not see "Imaging Devices" in the list, please move on to Section 2 for "Other Devices".
  4. Right-click on your scanner model (ex: Visioneer OneTouch 9320, Visioneer Strobe XP200, Xerox DocuMate 510, DM515, etc...)
  5. Left-click on "Uninstall" from the drop menu
  6. Click on "OK" when asked if you are sure you want to remove this device
    1. The scanner should now be gone from the Device Manager
  7. Right-click on ANYTHING in the device manager (ex: disk drives)
  8. Left-click on "Scan for Hardware Changes"
  9. Windows should now redetect the scanner and it should appear under "Imaging Devices"
  10. Close the Device Manager and System Properties windows

Section 2: If you see "?Other Devices" in the Device Manager:
  1. Click on the "Hardware" tab in the System Properties window
  2. Click on the "Device Manager" button
  3. Click on the "+" next to "?Other Devices"
  4. Right-click on the Scanner listed here. The scanner may be listed as any of the following:
    • USB Scanner
    • USB Device
    • Unknown Device
    • 1200 DPIScanner
    • (Your Scanner Model)
  5. Left-click on "Properties" from the drop menu
  6. Click on the "Driver" tab
  7. Click on the "Update Driver" button
    1. If Windows asks if you want to connect to Windows Update choose "No, Not at this time" then click on "Next"
  8. Choose "Install software automatically (recommended)"
  9. Windows should now find the driver files, click on "Finish" to close the Hardware Update Wizard
  10. The scanner should now appear in the Windows should now redetect the scanner and it should appear under "Imaging Devices"
  11. Close the Device Manager and the System Properties windows

 
Technical Support Tip for USB Scanners

If you are in the Device Manager and you do not see either "Imaging Devices" or "?Other Devices", click on the "+" next to "Universal Serial Bus Controllers".

If you see specifically "USB Device" or "Unknown Device", unplug your scanner USB cable. If the "USB Device" or "Unknown Device" disappears from that list, then you know that device was your scanner.

Try a different USB port on your computer and try a different USB cable to see if it appears under "Imaging Devices" or "?Other Devices".

If it appears back as an "Unknown Device" or "USB Device" under Universal Serial Bus Controllers then it may be a hardware issue and you should contact Technical Support.
 
Windows 98 or Me Users:

Section 1: If you see Imaging Devices in the Device Manager:
  1. Click on the "Device Manager" tab in the System Properties window
  2. Click on the "+" next to "Imaging Devices"
    1. If you do not see "Imaging Devices" in the list, please move on to Section 2 for "Other Devices".
  3. Click on your scanner model (ex: Visioneer OneTouch 7300, Strobe XP100, Xerox DocuMate 510, DM515, etc...)
  4. Click on the "Remove" button
  5. Click on "OK" when asked if you are sure you want to remove this device
    1. The scanner should now be gone from the Device Manager
  6. Click on the "Refresh" button
  7. Windows should now redetect the scanner and it should appear under "Imaging Devices"
  8. Close the System Properties window

Section 2: If you see "?Other Devices" in the Device Manager:
  1. Click on the "Device Manager" tab in the System Properties window
  2. Click on the "+" next to "?Other Devices"
  3. Right-click on the Scanner listed here. The scanner may be listed as any of the following:
    • USB Scanner
    • USB Device
    • Unknown Device
    • 1200 DPIScanner
    • (Your Scanner Model)
  4. Click on the "Remove" button
    1. The USB Scanner should now be gone from the Device Manager list
  5. Click on the "Refresh" button
  6. Windows should now redetect the scanner and it should appear under "Imaging Devices"
  7. Close the System Properties window

 
Technical Support Tip for USB Scanners

If you are in the Device Manager and you do not see either "Imaging Devices" or "Other Devices", click on the "+" next to "Universal Serial Bus Controllers".

If you see specifically "USB Device" or "Unknown Device", unplug your scanner USB cable. If the "USB Device" or "Unknown Device" disappears from that list, then you know that device was your scanner.

Try a different USB port on your computer and try a different USB cable to see if it appears under "Imaging Devices" or "?Other Devices".

If it appears back as an "Unknown Device" or "USB Device" under Universal Serial Bus Controllers then it may be a hardware issue and you should contact Technical Support.

You should now be able to scan from PaperPort or some other imaging application that accesses the scanner.

If this did not resolve the issue, proceed with the step-by-step troubleshooting provided by the web links below:

VIS1051 - Step 1 Checking the Connections
VIS1052 - Step 2 Redetect the Scanner in Windows
VIS1053 - Step 3 Reinstall the Scanner Driver
VIS1054 - Step 4 USB Scanners - Checking Your Computer Chipset
VIS1055 - Step 5 Parallel Scanners - Checking for Conflicts
VIS1056 - Step 6 Contact Support

 

Visioneer Disclaimer:
Visioneer provides these technical articles for information use only. The information is generally for a specific scanner model distributed by Visioneer and a designated version of software provided with the scanner. Visioneer makes reasonable efforts to verify the accuracy of content and issue resolution in these technical articles but cannot guarantee any matter including accuracy or results. The articles are provided "as is", without representation or warranty, express or implied, whether of merchantability, fitness for particular purpose, title, or non-infringement. Visioneer disclaims any liability for damages, whether direct or indirect, special, incidental, or consequential, from use of the information in these articles. Visioneer does not evaluate any effect on software and hardware not provided by Visioneer, and therefore disclaims any liability for same. Visioneer is not responsible for the content of support pages accessed through external links. The articles are subject to revision or change without notice.