Connecting to the same WiFi access point with an incorrect password succeeds, after successfully connecting and disconnecting with a valid password.

Pi Pico W 2 running: 1.25.0-preview

Do something like this:

class WC():

    def __init__(self):
        self._wlan: network.WLAN = network.WLAN(network.STA_IF) # WiFi client

   def connect(self, ssid: str, pwd: str) -> bool:
        i: int = 10
        self._wlan.connect(ssid, pwd)
        while i > 0 and self._wlan.status() == network.STAT_CONNECTING:
            i -= 1
            time.sleep(1)
        if self._wlan.status() == network.STAT_GOT_IP or self._wlan.status() == 2:
            self._ssid = ssid
            self._pwd = pwd
            return True
        elif self._wlan.status() == network.STAT_CONNECTING:
            log.info('Still connecting, try later’)
        elif self._wlan.status() == network.STAT_IDLE:
            log.info('Network idle’)
        elif self._wlan.status() == network.STAT_WRONG_PASSWORD:
            log.info('Connection failed. Check password’)
        elif self._wlan.status() == network.STAT_NO_AP_FOUND:  
            log.info('Connection failed. Check ssid’)
        elif self._wlan.status() == network.STAT_CONNECT_FAIL:
            log.info('Connection failed %s.', self._wlan.status())
        else:
            log.info('Unknown Status: %s', self._wlan.status())
        return False    

  def disconnect(self) -> boot:
        self._wlan.disconnect()
        time.sleep(2)


wc = WC()
wc.connect(‘ssid’, ‘goodpwd’) # Succeeds
wc.disconnect()
wc.connect(‘ssid’, ‘badpwd’) # Succeeds - NO!

Do I need to reinitialize the WLAN in the disconnect and drop the ip address - somehow?

Start with the provided network.WLAN reproduction on a Pi Pico W 2 running MicroPython 1.25.0-preview, focusing on the connect/disconnect sequence and status values. Confirm that a valid connection followed by disconnecting allows an incorrect password to report success, then identify the WLAN state that must be reset so the bad-password attempt fails.