Fix Wi-Fi Connection Problems
This guide helps you resolve Wi-Fi connectivity issues such as “Connected, no internet,” authentication errors, or devices not connecting to a wireless network. Follow these steps to diagnose and fix the problem on Windows, macOS, and mobile devices.
Quick Fix Steps
- Restart your computer and Wi-Fi router or modem.
- Ensure Airplane Mode is turned off.
- Forget the Wi-Fi network and reconnect by re-entering the password.
- Check if other devices can connect to the same network — this helps isolate the problem.
- Update your Wi-Fi adapter drivers (Windows) or run System Update (macOS).
For Windows Users
Before making any changes, ensure you’ve saved your work and that you’re logged in as an administrator. These steps can reset important network settings.
Tip: If you only have minor connection issues, try restarting your router and PC first — it fixes most temporary problems.
🧭 Run the Windows Network Troubleshooter
Use the built-in troubleshooter to automatically detect and fix connection problems:
Settings → Network & Internet → Status → Network Troubleshooter💻 Use Command-Line Tools
Open Command Prompt (Run as Administrator) and enter the following commands one at a time to refresh your IP and DNS configuration.
Warning: The following commands reset network adapters and DNS cache.
VPN, proxy, or custom IP settings may be lost.
ipconfig /release
ipconfig /renew
netsh winsock reset
netsh int ip reset
ipconfig /flushdns
Success Tip: After running these commands, restart your computer.
Most connectivity issues should now be resolved.
For macOS Users
- Go to System Settings → Network → Wi-Fi.
- Turn Wi-Fi off and back on.
- Remove the network and reconnect with your password.
- Run the built-in Wireless Diagnostics tool: press Option + click the Wi-Fi icon → “Open Wireless Diagnostics.”
Advanced Troubleshooting
- Check your router’s firmware — update it if needed.
- Try connecting to a 5 GHz network if available (less interference than 2.4 GHz).
- Move closer to the router to reduce signal loss.
- Disable any VPN or proxy that could be affecting the network connection.