[Windows/macOS] The ScanSnap and a computer cannot be connected via a USB cable

Did you select the ScanSnap that you are using in the scan window of ScanSnap Home?

Make sure that the ScanSnap that you are using is selected from the ScanSnap list in the scan window in the following procedure.

1. Display the scan window of ScanSnap Home on the computer.

   • To display the scan window

2. Check that the ScanSnap that you are using is displayed in the ScanSnap list at the top of the window.

   

   If another ScanSnap unit is selected, select the ScanSnap that you are using.

A USB cable may not be recognized correctly

Check the following:

• If you are using a USB hub, whether you can connect the ScanSnap directly to the computer via a USB cable and scan documents

• Whether the ScanSnap can perform a scan after it is connected to another USB port on the computer

• Whether you can scan documents after unplugging and plugging the USB cable several times from the ScanSnap and the computer

• Whether a USB cable has a problem such as damage to the USB terminal part or the cable part

[Windows] Errors might occur with the ScanSnap driver

Use the recovery tool in the following procedure to recover the connection status of the ScanSnap.

1. Display the scan window of ScanSnap Home on the computer.

   • To display the scan window

2. Select [Preferences] in the menu that appears when you click at the top of the scan window to display the preferences window.

3. Select the ScanSnap that you are using from the list of ScanSnap units that is located in [Scanner information] in the [Scanner] tab.

4. Click the [Recover] button, and follow the message that appears to solve the problem.

[macOS] Do you have access permission for the [tmp] folder on your computer?

If you do not have read and write permissions for the [tmp] folder on your computer, you cannot scan documents.

Set read and write permissions for the [tmp] folder under the [private] folder on your computer.

Is another ScanSnap unit connected to the computer via a USB cable?

If you connect one more ScanSnap unit to a computer via a USB cable while another ScanSnap unit that is connected to the computer via a USB cable already exists, the ScanSnap that you connected cannot be recognized by ScanSnap Home.

Turn off the ScanSnap unit that is not intended to be used.