Here’s a structured approach to troubleshoot the “Error: Network connection failed” message effectively:

1. Check Hardware Connections: Ensure all cables are securely connected to your modem and router.
2. Restart Devices: Power off your modem and router. Wait for 30 seconds, then turn them back on. Restart your device.
3. Forget and Reconnect to Wi-Fi: On your device, forget the Wi-Fi network and reconnect using the correct password.
4. Run Network Troubleshooter: If using Windows, run the built-in network troubleshooter to identify and fix issues automatically.
5. Update Network Drivers: Check if your device’s network drivers are up to date. Update them if necessary.
6. Check for Outages: Contact your Internet Service Provider (ISP) or check their website to see if there are any service outages in your area.
7. Reset Network Settings: As a last resort, reset your device’s network settings, but ensure you have your Wi-Fi credentials handy for re-entry.

Following these steps can help you identify and rectify the network connection error efficiently.