How to fix 'Association rejected' connecting an Android to Wi-Fi which you previously had access to
219WARNING - I will NOT be held responsible for any damages the methods shown in this video may cause to yours or someone else's hardware, software, and/or data, including loss of use of such devices and/or loss of data and/or loss of profits from the resulting inability to use such devices and data. Any information or program you choose to put into use from this video is done AT YOUR OWN RISK. As a precaution, I recommend backing up any irrecoverable data before installing and using ANY new software(s), including those shown in this video.
This video will show you troubleshooting tips on how to fix the 'Association rejected' error message when trying to connect your Android device to a Wi-Fi network which you previously had access to but now no longer have access to due to this error. Firstly, ensure you have very strong Wi-Fi reception (physically approach the router if need be). Turn off the Wi-Fi ability of your Android device and wait minimally a minute. Re-enable Wi-Fi and try to connect. If no luck, power down your router and disable the Wi-Fi function on your Android device and wait minimally 5 minutes. ONLY power up the router and wait an additional minute. Then enable Wi-Fi capability of your Android device and try to connect. If STILL no luck, then you will need the Wi-Fi password for the network you are trying to connect to (ask your network administrator if you do not know it). Long press (long hold, long tap) the network listing entry in your Wi-Fi network list, select remove, delete or forget. Then once again try to connect to the network and re-enter the Wi-Fi password (hopefully this rectifies the problem).