My Raspberry Pi was connecting to a WiFi network for months without issue. About a week ago it suddenly stopped and will not associate with the AP. `iwlist wlan0 scan` shows the network is available: Cell 02 - Address: D6:D9:19:9A:00:5A Channel:1 Frequency:2.412 GHz (Channel 1) Quality=56/70 Signal ...

I have a very similar issue. I had a wifi connection for months and suddenly nothing. Scan shows the network, but I'm not able to connect. The error I'm getting when associating a wpa_supplicant file: wlan0: Event ASSOC_REJECT (13) received wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16 More details ...