[Update 9/17 12:44 AM]: We have restored connectivity to Nexon Launcher and MapleStory. 

Hi Maplers,

We've confirmed there is an issue with connecting to Nexon Launcher and MapleStory.

We are working to resolve the issues and will provide updates as we have them. We apologize for the inconvenience this might have caused.

Sincerely, 

The MapleStory Team