I recently upgraded my wifi router and couldn't get my Aria 1 re-connected to wifi. I know this is a common issue and it frustrates a lot of people. I looked at many threads offering advice on getting it setup - making sure you are within 10 feet of the router, making sure you use WPA not WPA2, making sure your 802.11b band is enabled on your router - all of these I had right from the beginning. But it was one obscure comment on one thread that made all the difference - enable your IPV6 on your router. My last router had it enabled and I didn't even think to check this one - sure enough, it was disabled. So I enabled it, logged off my computer and back on and tried setup again - and BOOM, I was able to connect my Aria instantaneously to my network.
So, if you are having issues, check your IPV6 setting in your router (its different for every brand so you'll have to google instructions for your specific router if you aren't familiar with it)
Moderator edit: updated subject for clarity
