Error Code: 2123-0011

Possible solutions

• Restart the console. If the console does not respond, hold down the POWER Button for twelve seconds to force it to shut down, then power on the console again.
  • How to restart a Nintendo Switch 2 console
    1. Press and hold the POWER Button for at least three seconds.
    2. Select Power OptionsOpciones de apagadoOptions d'alimentationOpções de desligar.
    3. Select Restart.
  • How to restart a Nintendo Switch console
    1. Press and hold the POWER Button for at least three seconds.
    2. Select Power OptionsOpciones de apagadoOptions d'alimentationOpções de desligar.
    3. Select Restart.
• Move the console within 10 to 15 feet of the wireless router to improve the signal strength during troubleshooting.
• Power cycle your home network.
  • How to power cycle your home network
    1. Unplug the power cable from both the modem and wireless router (if separate from the modem).
    2. If the modem's lights remain on, this may indicate you have a back-up battery installed. You will need to remove this battery to power cycle the modem.
    3. After 30 seconds, plug the power cable back into your modem and wait for the lights to remain steady.
    4. Plug the power cable back into the router and wait for the router lights to remain steady.

    For more information, see How to Power Cycle a Home Network.

• Perform a connection test and make a note of the connection test results (status, NAT type, download speed, upload speed).
  • How to test your Internet connection
    1. Select the System Settings icon from the HOME Menu.
    2. Scroll down through the System Settings menu and select Internet.
    3. Select Test Connection. The test will begin immediately. A message will appear stating if the test was successful with the results listed below.
       • Connection Name

         The name you have given the Internet connection, within the connection settings. If you have not named the connection, it will be displayed.

       • SSID

         The SSID of the wireless network you are connecting to.

       • Internet Connection

         The result of an Internet connectivity test. If Success is displayed, it indicates the console was able to connect with Nintendo's services.

       • Global IP Address

         The global IP address of the network you are using.

       • NAT Type

         The results of a NAT test for the network you are connecting to. This will range from A (best for peer-to-peer communication) to F (unable to complete peer-to-peer communication).

       • Download Speed

         The speed at which data was sent to you over the network you are connecting to.

       • Upload Speed

         The speed at which data was sent from you over the network you are connecting to.

    For more information, see How to Use the Internet Connection Test.

• Move any metal objects or electronic devices away from your Nintendo Switch 2 or Nintendo Switch console and wireless router. This includes filing cabinets, speakers, power strips, glass, or cordless phones that may interfere with wireless signals.
• Manually enter an alternate DNS to determine if the DNS you are currently using is not working.
  • How to manually enter DNS settings on Nintendo Switch 2 or Nintendo Switch
    1. Select Settings from the HOME Menu.
    2. Select Internet.
    3. Select Internet Settings. Your console will automatically search for nearby Wi-Fi signals.
    4. Select your network from the list of networks located under Saved Networks on Nintendo Switch 2 or Registered Networks on Nintendo Switch.
    5. Select Change Settings.
    6. Select DNS Settings.
    7. Select Manual.
    8. Select Primary DNS.
    9. Hold down the B Button to delete the existing DNS (it defaults to zeros).
    10. Enter 8.8.8.8 as the primary DNS, and then select OK.

        Important: The suggested DNS are public DNS provided by Google and are subject to Google's Terms of Service. If you prefer to not use this service, doing an Internet search for public DNS will provide you with several other options you can use.

    11. Select Secondary DNS.
    12. Hold down the B Button to delete the existing DNS.
    13. Enter 8.8.4.4 as the secondary DNS, and then select OK.

    For more information, see How to Manually Enter DNS Settings on Nintendo Switch 2 or Nintendo Switch.

• Try turning off IPv6 Connection.
  • How to turn off IPv6 Connection
    1. Select System Settings from the HOME Menu.
    2. Select Internet.
    3. Select Internet Settings.
    4. Select your network name and select Change Settings.
    5. Select IPv6 Connection to toggle it off.
• If the issue persists, try connecting online using a different access point.
  • How to connect Nintendo Switch 2 to a wireless home network
    1. Place the Nintendo Switch 2 console within 10 feet of the wireless router so there will be a strong wireless signal.
    2. Select System Settings from the HOME Menu.
    3. Select Internet, and then Internet SettingsConfiguración de internetParamètres InternetConfigurações de internet. Your console will automatically search for nearby wireless network signals.
    4. Select the appropriate network name (SSID) from the list.
    5. Use the onscreen keyboard to enter the network's wireless password, if one is required.
    6. The connection will be tested. Once the test is complete, select OK.
       • If the connection test fails, an error code and message will appear. Search for our support article on the error code for steps to troubleshoot the connection.

    For more details, please see How to Connect to the Internet on Nintendo Switch 2

  • How to connect Nintendo Switch to a wireless home network
    1. Place the Nintendo Switch console within 10 feet of the wireless router to ensure a strong wireless signal.
    2. Select Settings from the HOME Menu on the Nintendo Switch console.
    3. Select Internet, and then Internet Settings . The Nintendo Switch will automatically search for near-by Wi-Fi signals.
    4. Select the appropriate network name (SSID) from the list.
    5. If prompted, use the onscreen keyboard to enter the network's wireless password .
    6. The Nintendo Switch will test the Internet connection. Once the test is complete, select OK to complete the process.

    For more information, see How to Connect to the Internet Using a Wireless Network.