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How do we fix PSN error NW 31456 9?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The PSN error nw 31456 9 is a network error that can be caused by a number of things. One possibility is that the PSN servers are down or experiencing some sort of issue. Another possibility is that there is a problem with your home network or internet connection. This error can also be caused by a problem with your PS4 console. If you are getting this error, it is recommended that you try restarting your PS4 console and see if that fixes the problem. If the problem persists, you may need to contact Sony customer support for further assistance.

Other common searches for this error include:

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1. Restart the PS4 system

To restart the PS4 system, first turn off the system by pressing the power button. After the system has power off, hold down the power button and the initial PS4 screen will appear. From here, use the cross button to select “Restart” and then hit the button to restart the system.

2. Update the system software

  1. Restart the PS4 system.
  2. Access the system settings menu.
  3. Select System Update.
  4. Follow the on-screen instructions to update the system software.
  5. After the system software update is complete, restart the PS4 system.
  6. If the psn error nw 31456 9 still exists, repeat the system software update process.

3. Change the DNS settings

1.Navigate to: Start -> Control Panel -> Network and Internet -> Network and Sharing Center 2.Click on the “Change adapter settings” link on the left side of the window. 3.Select the network adapter on which you are having the issue and click on the “Properties” button. 4.On the “General” tab, click on the “Advanced” button. 5.On the “Advanced” tab, under the “DNS Servers” heading, click on the “Add” button. 6.In the “Add DNS Server” dialog box, type the following information and click on the “OK” button. Name: Primary Address: 192.168.1.1 7.Click on the “OK” button to close the “Add DNS Server” dialog box. 8.Click on the “Apply” button to save the changes. 9.Click on the “OK” button to close the “Network and Internet” window.

If the answers above didn't work then you should also try:

  1. Restart the router.
  2. Check the status of the PlayStation Network.
  3. Contact PlayStation support.