WiFi "Authentication Error" on Android

4.5

You enter the correct password, but Android keeps saying "Authentication Error occurred".

Symptoms
  • Cannot connect
  • Looping
  • Error message
Possible Causes
  • WPA3/WPA2 transition mode bug
  • Incorrect date/time
  • MAC randomization

Step-by-Step Fix

1

Change "MAC Address Type"

In the WiFi network settings, switch from "Randomized MAC" to "Phone MAC".

2

Check System Time

If your clock is off by a few minutes, the security handshake will fail.

3

Reset WiFi & Bluetooth

Settings > System > Reset > Reset WiFi, Mobile & Bluetooth.

When to See a Technician

Android's "Randomized MAC" feature can confuse some older routers, leading to authentication failures.

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