Error Code: 2123-0209

Possible solutions

• Restart the console.
  • 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.
• 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.

• 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.

• Move the console within 10 to 15 feet of the wireless router to improve the signal strength during troubleshooting.
  • If you haven't already, it may be helpful to remove the console from the dock while troubleshooting, and then return the console when troubleshooting is complete.
• 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.
• Connect to a different wireless band if your router supports both the 2.4Ghz and 5Ghz frequency bands.
  • How to connect Nintendo Switch 2 to a different wireless band
    1. Select Settings from the HOME Menu.
    2. Select Internet, and then Internet Settings . The console will automatically search for near-by Wi-Fi signals.
    3. Select the network name (SSID) of the frequency band you are not currently connected to. Many routers will have default SSID names that label whether the connection is 2.4Ghz or 5Ghz.
    4. If prompted, use the onscreen keyboard to enter the network's wireless password.
    5. The console 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 on Nintendo Switch 2.

  • How to connect Nintendo Switch to a different wireless band
    1. Select Settings from the HOME Menu .
    2. Select Internet, and then Internet Settings . The Nintendo Switch will automatically search for near-by Wi-Fi signals.
    3. Select the network name (SSID) of the frequency band you are not currently connected to. Many routers will have default SSID names that label whether the connection is 2.4Ghz or 5Ghz.
    4. If prompted, use the onscreen keyboard to enter the network's wireless password .
    5. 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 a Nintendo Switch Console to the Internet Using a Wireless Network.

  • Unsure if your router supports both frequency bands

    Contact your Internet Service Provider for assistance with how to review this information within your router's settings.