Through its official support page, Nintendo said that tonight there will be new for Nintendo Network maintenance. As stated on the website, “during a scheduled service maintenance period specified below, some network services may not be available.”

Online gaming, rankings, etc. (Wii U, 3DS and Switch): From Thursday, June 1, 2017 at 3:45 until Thursday, June 1, 2017 at 5:00.

ViPlease stay tuned for any updates on the world of Nintendo.

Source: Nintendo