Why has my Lumia 920 suddenly stopped connecting to the wifi?

[WPCentral Question]

My lumia 920 suddenly stopped connecting to WiFi

I updated it to 8.1 yesterday and it worked for a bit...

 

[jleebiker]

Re: My lumia 920 suddenly stopped connecting to WiFi

Some questions:
Can you connect to other WiFi AP's?
Have you done a reset of your WiFi router lately?
Is your WiFi set to automatically determine its channel?

One thing you might check is to see if your WiFi is set to automatically determine its channel or of you can lock it down to a particular channel.