Hello all, As in the title, my Wii U suddenly cannot connect to my router, or any routers (hotspot, virtual wifi router, etc). It can see the wifi routers, but somehow it always failed when trying to connect to the router. Mind you, I do not have this problem before. This happens just this morning, when I'm trying to update my Wii U to the latest version. It suddenly disconnected while downloading, and then it didn't want to connect to it anymore. My other devices works fine with my router. I looked around the internet, many people had the same problems. But theirs can be fixed by manually configuring the connections (static ip, dns, etc). Mine doesn't. I found several people with the exact same problem with mine. Weirdly though, they said their units eventually reconnected to the router by itself the next day. Now mine just happened today. I don't know about tomorrow.... I tried to advance the date, no dice. Anybody has the same problem and how to fix it? Thanks. Btw, I'm on system 5.2 right now. It is updated from my copy of SSB. FIXED!!! This what works for me: 1. Turn off and unplug your Wii U 2. Check on the right side of your Wii U, there should be a door with a small screw. Open it. 3. Remove the door alongside with the battery. 4. Let it sit for about 15 minutes. 5. Put back the door with the battery. 6. Plug your Wii U and turn it on. Then hope for the best Still confused? Here's the teardown guide for the battery: https://www.ifixit.com/Guide/Nintendo+Wii+U+Console+Battery+Replacement/12589 What you just removed is the CMOS battery. In PC and Laptops, that battery is used to keep to "power" your BIOS even though it's been completely turned off. This battery is mainly used to keep the BIOS settings intact, such as date, time, boot sequence, etc. If the CMOS battery ran out, the BIOS will be reverted to default value. In my case, this somehow fixed my WiFi problem. OTHER POSSIBLE SOLUTIONS: - Manually configure your Wii U's WiFi configuration (There's too many guides for this already. I won't post it here) - Unplug your Wii U, let it sit overnight. - Remove any USB devices. - Change the channel for your wifi router. Reported working channels are 1, 6 and 11.