Causes of PS4 Not Connecting to the Internet
There may be numerous reasons why your PS4 won’t connect to the internet, but these are some of the most common problems:
The PlayStation Network (PSN) is offline. Your Wi-Fi network lost internet connectivity. You’re attempting to connect with an invalid username or password. The DNS settings on your PS4 aren’t configured correctly. The distance between your PS4 and the wireless router is too far, causing intermittent signal loss.
How to Fix It When Your PS4 Won’t Connect to Wi-Fi
Follow the recommendations below to get your PS4 console connected to the internet again. Connect a different device (such as your laptop or smartphone) to the same Wi-Fi network using the same password, preferably a device that recently established a successful connection. If this other device can see the Wi-Fi network but can’t connect to it using this password, there’s a good chance the password is invalid.