How to Fix "Authentication Error Occurred" on Android Wi-Fi

Quick answer
"Authentication error occurred" on Android means the phone could not verify the Wi-Fi password. Forget the network, re-enter the correct password, restart the router, and reset network settings if needed.
What does “Wi-Fi Authentication Error” mean?
The router rejected the phone's password or security handshake.
What causes it?
- Wrong or changed Wi-Fi password
- Router security type mismatch
- Router MAC filtering
- Network glitch
Steps to try
Stop when the issue is resolved.
- Tap the Wi-Fi network → Forget.
- Reconnect and type the password carefully.
- Restart the router and phone.
- Check if the router uses MAC filtering and add your phone.
- Settings → System → Reset options → Reset Wi-Fi, mobile & Bluetooth.
Need more support? Check the official help: Microsoft Support: Fix Wi-Fi connection issues
FAQs
Does Private DNS or random MAC matter?
Randomized MAC can break MAC filtering. Use device MAC for that network.
Can I see the saved Wi-Fi password?
On many Android phones, Settings → Wi-Fi → network → Share shows a QR code with it.
By Priya Shah
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