Restart your PlayStation®5 console and connect to the Internet using a wired connection if possible.
When using a wireless connection, try bringing your PS5 console closer to your router or removing anything interrupting the connection between the devices.
Turn off your router and wait at least 5 minutes, then restart it.
Update your router to the latest firmware. For details on how to update, please contact the router vendor.
If possible, try opening the following ports: TCP: 80, 443, 3478, 3479, 3480. UDP: 3478, 3479, 49152 to 65535. For details on how to open ports, please contact your Internet Service Provider.