[Windows/macOS] The ScanSnap you want to use does not appear on the list/The ScanSnap you want to use cannot be found

Is the ScanSnap connected to the wireless access point?

Run a diagnosis to check whether the ScanSnap is connected to a wireless access point, and take appropriate measures to solve the problem depending on the results of the diagnosis.

1. Press in the home screen on the touch panel of the ScanSnap to display the [Settings] screen.

2. Press to display the [Wi-Fi settings] screen.

3. Press [Wi-Fi information] to display the [ScanSnap information] screen.

4. In the [Wi-Fi] tab, press the [Diagnosis] button.

When the "The connection with the access point is fine." message is displayed

The ScanSnap and a wireless access point are connected. Check the following:

Is there a device with the same IP address on the network? Also, are there many network devices and computers connected to this network?

Change the IP address when it overlaps with another device.

Also, make more IP addresses available by turning off unused computers and network devices.

Is an IP address set for the ScanSnap?

• When the DHCP function is disabled on the wireless access point, enable DHCP first, then let the ScanSnap automatically configure an IP address again.

  Or, configure an IP address for the ScanSnap manually.

  For details about how to set an IP address for the ScanSnap, refer to ScanSnap Help.

• If all IP addresses are already used for DHCP, specify a wider range for IP addresses to be used.

  Or, make an IP address available by disconnecting an unused device from the network.

 

When the error message is displayed

Follow the error message to solve the problem.

If the problem still persists, check the following:

Is the wireless access point turned on? Alternatively, are there any errors or malfunctions on the wireless access point?

Turn on the wireless access point.

If the wireless access point is turned on, restart the wireless access point and then check that there are no errors or malfunctions on the wireless access point.

For details about wireless access point errors, refer to the manual of your wireless access point.

TIP

• You can connect the ScanSnap and the computer or the mobile device via Wi-Fi in Direct Connect mode without a wireless access point.

  For details about how to connect the ScanSnap and a computer directly, refer to ScanSnap Help.

Have you connected the ScanSnap to a wireless access point?

Refer to How can I connect my ScanSnap to a wireless access point? and connect the ScanSnap to a wireless access point.

Are the network name (SSID), security protocol (authentication method), encryption method, and security key configured correctly?

The settings for the ScanSnap such as the network name (SSID), security protocol (authentication method), encryption method, and security key need to match with the settings for the wireless access point.

Check the Wi-Fi settings for the ScanSnap, and configure again if necessary.

For details about how to check the Wi-Fi settings, refer to ScanSnap Help.

Note that if you do not know the network name (SSID) or security key of the wireless access point, refer to the manuals of the wireless access point, or contact the manufacturer.

If the security protocol for the network name (SSID) is "WPA3", the ScanSnap cannot be connected. Connect the ScanSnap to the wireless access point using "WPA2" as the security protocol.

Ask the manufacturer of the wireless access point whether the security protocol is "WPA2".

Are the ScanSnap and wireless access point distant from each other? Also, is there anything that may block the signal (such as walls and metal boards), or an electromagnetic source?

The signal between the wireless access point and the ScanSnap is weak, or there may be some signal interference.

On the touch panel of the ScanSnap, check the signal status with the icon that is displayed at the top of the home screen.

Icon	Signal Status
	Signal strength: Strong
	Signal strength: Medium
	Signal strength: Weak
	No signal
	Searching for a wireless access point/No wireless access point specified

If the signal status is not fine, move the ScanSnap and the wireless access point to different locations.

• Move the ScanSnap closer to the wireless access point.

• Move the ScanSnap and the wireless access point away from the following items:

  • Obstacles that may block the signal (for example, walls and metal boards)
  • Devices that may cause signal interference (for example, microwaves and cordless phones) and wireless devices

• Change the direction of the ScanSnap.

TIP

• Even if the signal status is fine, communication within the range of a certain frequency or in certain wireless channels may become unstable due to signal interference such as noise.

  When you are in a region where 5 GHz Wi-Fi is available, do not select [Automatic] for the frequency in order to connect the ScanSnap. Select [2.4GHz] or [5GHz] depending on where you use the ScanSnap.

  For details about how to change the frequency for connecting the ScanSnap, refer to ScanSnap Help.

  Change the value of the wireless channel on the wireless access point if necessary.

  For details, refer to the manual of your wireless access point.

 

Are the ScanSnap and the computer communicating via the network?

Check whether the ScanSnap and the computer are able to communicate via the network by using the PING command. For details about the checking method, refer to [Windows/macOS] Can I check the communication status by using the PING command?.

When they are able to communicate via the network

Proceed to the next check item after "Are the ScanSnap and the computer communicating via the network?".

When they are not able to communicate via the network

Check the following items:

Have you configured any communication authorization settings on the wireless access point?

If the settings are configured in the ways below on the wireless access point, follow the solutions accordingly.

• Communication between wireless devices is disabled (for example, because of a privacy separator function or a port separator function)

  Enable communication between wireless devices on the wireless access point.

• When the SSID broadcast, such as ANY connection, is disabled

  Enable the SSID broadcast on the wireless access point. Otherwise, configure the Wi-Fi settings manually.

• When the protocol filter function is configured

  Configure the protocol on the wireless access point.

• When the stealth function is configured

  Disable the stealth function, and then configure the Wi-Fi settings again using the WPS function. Otherwise, configure the Wi-Fi settings manually.

• When MAC address filtering is configured

  Set the MAC address for the ScanSnap on the wireless access point, and then configure the Wi-Fi settings again.

In addition, the set channel may be used with another wireless access point.

In this case, change the value of the wireless channel on the wireless access point.

For details about the settings of the wireless access point, refer to your wireless access point manual.

Are you using a public wireless LAN service?

In a public wireless LAN environment, the ScanSnap cannot be connected from a computer or a mobile device because the privacy separator function is usually set to enabled.

Use the ScanSnap in Direct Connect mode without a wireless access point.

For details, refer to ScanSnap Help.

 

Is the connection to the ScanSnap blocked by a firewall?

Is the specified receiving port number used by another application?

If the specified receiving port number is used by another application, ScanSnap Home cannot receive the information that the ScanSnap is turned on.

Change the port number in the following procedure:

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. Change the port number for [Port number for startup notice] in [Network settings].

If you change the port number for the startup notice, you also need to change the sending port number for the ScanSnap.

1. Press in the home screen on the touch panel of the ScanSnap to display the [Settings] screen.

2. Press to display the [Wi-Fi settings] screen.

3. Press [Port number for startup notice].

4. Change the port number for [Port Number].

Connect the ScanSnap and the computer to the same network, or specify the IP address of the ScanSnap directly.

If the ScanSnap that you want to use and the computer are connected to different networks, the ScanSnap does not appear on the list.

Check that the ScanSnap and the computer are connected to the same network. If the ScanSnap is connected to a different network from the computer, connect it to the same network.

• How to check and change the network that the ScanSnap is connected to

  For details, refer to ScanSnap Help.

• How to check and change the network that the computer is connected to

  Refer to the manual of the computer.

Even if the ScanSnap and a computer are not connected to the same network, you can connect them by specifying the IP address of the ScanSnap directly.

For details about reconnecting the ScanSnap and a computer by specifying the IP Address of the ScanSnap, refer to ScanSnap Help.

Are there network security restrictions?

Contact the network administrator.

Contact your network administrator if IEEE 802.1X authentication is used.

Check the following with your network administrator:

• Whether the Wi-Fi settings are the same as the settings on the authentication server

• Whether the network environment for the authentication server is normal

• Whether the authentication server and the wireless access point are connected correctly

• Whether the certificate is valid

  Example: Whether the certificate has not been revoked or has not been expired

• Whether the CN (CommonName) for the certificate is within 64 bytes if [EAP-TLS] is selected for the authentication method.

[macOS] Is the computer connected to the network via a LAN cable?

Change the settings on the computer so that the Wi-Fi connection is given priority over the cable LAN connection in the following procedure:

1. Select [System Settings] from the Apple () menu to display the system settings window.

2. Select [Network] to display the [Network] window.

3. Click and select [Set Service Order] from the menu that appears.

4. In [Service Order], drag [Wi-Fi] and drop it above [Ethernet].

5. Click the [OK] button.

6. Click at the top of the window to close the [Network] window.