Follow these steps to resolve the “Error: Network connection failed” issue:

1. Check Physical Connections: Ensure that all cables are securely connected to the modem, router, and device.
2. Restart Your Device: Turn off your computer or mobile device, wait for a few seconds, and turn it back on.
3. Power Cycle Your Router: Unplug your router from the power source, wait for 30 seconds, and plug it back in. Wait for it to fully restart.
4. Check Wi-Fi Settings: Ensure that Wi-Fi is enabled on your device and that you’re connected to the correct network.
5. Forget and Reconnect: On your device, go to Wi-Fi settings, forget the current network, and reconnect by entering the password again.
6. Check for Outages: Use another device to see if the internet is down for everyone in your area. Check your ISP’s website or social media updates.
7. Run Network Troubleshooter: On Windows, go to Settings > Network & Internet > Status and run the troubleshooter.
8. Update Network Drivers: Ensure that your device’s network drivers are up to date. Check in Device Manager for any available updates.
9. Reset Network Settings: If issues persist, consider resetting your network settings. This option is found in the settings menu of most devices.
10. Contact Your ISP: If none of the above steps resolve the issue, reach out to your Internet Service Provider for assistance.

These step-by-step instructions will guide you through the troubleshooting process efficiently.