The Nintendo Switch has a 802.11/ac WIFI chip in it, that runs on 2.4ghz AND 5ghz.
So for people who are getting a problem, where you try to hop onto your wireless network and the switch just doesnt see it. But it can see other people's.
REASON:
This means that most likely your router is using the wrong security settings.
Log in, and locate: "Security" and search for Authentication Method or something using the words TKIP or AES.
The choices are:
1. TKIP
2. AES
3. TKIP+AES (combined together)
You want to select AES and apply settings (possibly reboot) to your router. Then your switch will be able to detect your WIFI again.
