The error code CE-33729-4 on a PlayStation 4 usually points to a connection issue between your console and the PlayStation Network (PSN).

Possible Causes:

• PSN Outage: Sometimes the PSN servers might be down for maintenance or due to unforeseen issues.

• Internet Connectivity Problems: Your internet connection might be unstable or experiencing problems.

• Firewall or Router Settings: Your router or firewall settings might be blocking your console from connecting to the PSN.

• Corrupted Data: In some cases, corrupted data on your console might be preventing it from connecting to the PSN.

Troubleshooting Steps:

1. Check PSN Server Status:

• Visit the official PlayStation Network Status page to see if there are any known issues or outages.

2. Check Your Internet Connection:

• Test other devices: Try connecting to the internet with other devices in your home to see if the issue is with your console or your overall internet connection.
• Restart your router: Turn off your router, wait for 30 seconds, and turn it back on.
• Use a wired connection: If possible, try connecting your PS4 to your router using an Ethernet cable for a more stable connection.

3. Check Your Router Settings:

• Open necessary ports: Ensure that the following ports are open on your router: TCP: 80, 443, 3478, 3479, 3480 UDP: 3478, 3479
• Disable DMZ: If you have enabled DMZ on your router, try disabling it temporarily to see if it resolves the issue.

4. Rebuild Database:

• Safe Mode: Turn off your PS4 completely. Then, press and hold the power button until you hear two beeps. This will boot your PS4 into Safe Mode.
• Rebuild Database: Select “Rebuild Database” from the Safe Mode menu. This process might take a while, but it can help fix corrupted data issues.

Additional Tips:

• Update System Software: Make sure your PS4’s system software is up-to-date.
• Initialize PS4: If none of the above steps work, you might need to initialize your PS4 as a last resort. This will erase all data on your console, so back up any important data first.

Further Help:

• If you’ve tried all of these steps and you’re still experiencing the error, you can contact PlayStation Support for further assistance.