A few PS4 and PS5 owners are currently facing error WS-37400-4 on PSN. There are also reports of sign-in issues with the PlayStation Network. We have posted some fixes and tips to address PlayStation error WS-37400-4.
Read more details here.
This error occurs when a user fails to login to the PSN network. The error code WS-37400-4 is related to network connection issues. Sometimes it is a PSN backend issue or PSN is offline.
Changes Router DNS
To do this, access your router’s web interface and log in with the admin credentials. Find a DNS server option on one of the pages. The option may be under LAN or DHCP server settings.
Change your Router DNS to the following.
Make sure your PS4’s system software has the most recent update:
Clear your PS4’s cache:
A PSN backend update will fix the error WS 37400 4.