PlayStation 4 Error Codes NP-37667-9, NP-37668-0, NP-33318-8
These network server error codes represent “Share Play has been disconnected because the network connection is now unstable“.
This means that you’d not be able to join Share Play because the network connection is now slow or unstable. Hence one of the easiest fix to enjoy Share Play for both yourself and your friend is to have a stable and fast internet connection.
It is recommended to use a PlayStation 4 that is connected to the network using a LAN cable instead of a WiFi connection. And in a situation where it’s not possible then ensure your system is as close to the router as possible. Additionally, you should take into account the devices that are also connected to the same network you are using, they could be using the larger part of the bandwidth, hence, disconnecting them can help in improving your connection. You can also check your network connection from Settings (Settings > Network > Test Internet connection).
PlayStation 4 Error Code NP-35000-8
This PlayStation 4 error code means PSN is under maintenance.
When you see this, there is pretty much nothing we can do but to try again later.
PlayStation 4 Error Code NP-38497-1
When this error code appears on your screen, it simply means that the connection to the network may have been affected during a Share Play session because the speed of your network (upload) is only 2-5 Mbps.
To fix this error code, you and your friend will need a high-speed internet connection of at least 2 Mbps. If possible it’ll be best to connect your PS4 through a LAN cable and if this isn’t possible, keep the system as close as possible to the router.
Sometimes other devices connected to the router could be using a larger part of the bandwidth, hence disconnecting other devices connected to the router will greatly improve the speed.
PlayStation 4 Error Code NP-31952-0, NP-31928-3
These network server error codes represent “Could not connect to network“.
To fix this error code, you’d have to run an internet connection test and ensure that all your network settings are correct. Sometimes it could be as a result of PSN undergoing maintenance so you’d have to check its status too.