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Networking

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

A practical technology troubleshooting workspace
Wi-Fi Authentication Error

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.

  1. Tap the Wi-Fi network → Forget.
  2. Reconnect and type the password carefully.
  3. Restart the router and phone.
  4. Check if the router uses MAC filtering and add your phone.
  5. 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.