Here’s a step-by-step approach to resolving the error: network connection failed. Please check your internet connection.

1. Check Physical Connections: Ensure that all cables are securely connected to your modem and router. Look for any visible damage.
2. Restart Your Devices: Power off your modem and router. Wait for 30 seconds before turning them back on. This simple reset can often resolve connectivity issues.
3. Verify Network Status: On your device, check if Wi-Fi is enabled and you are connected to the correct network.
4. Run Network Troubleshooter: For Windows users, access the network troubleshooter by going to Settings > Network & Internet > Status > Network troubleshooter. Follow the prompts for diagnosis.
5. Check for Service Outages: Visit your ISP’s website or contact customer service to see if there are known outages in your area.
6. Forget and Reconnect to Wi-Fi: On your device, forget the current Wi-Fi network and reconnect by entering the password again.
7. Update Network Drivers: For computer users, ensure that your network drivers are up-to-date by checking the manufacturer’s website.
8. Reset Network Settings: On mobile devices, you can reset your network settings to default. Be aware this will erase saved Wi-Fi passwords.
9. Use Ethernet Connection: If possible, connect your device directly to the router using an Ethernet cable. This helps determine if the issue is with Wi-Fi or the internet itself.
10. Contact Your ISP: If all else fails, reach out to your service provider for assistance. They may need to send a technician to resolve the issue.

These steps provide a systematic approach to tackling the network connectivity error. By following them, you can diagnose and fix many common problems.