Rexaar

Just a bug, to fix it (i think) sell something else to the npc and it should go away

If mean you are missing a prequest to fight Empress Cygnus.

Try to cc after you used a boss queue when fighting horntail, chances is that this occur when too many people are fighting horntail at the same time in the same ch.

I was bossing and it started to happen a few weeks before I posted and still not resolved. I had no clue what was causing it. Had no latency that time.

Stop using Vengeance, … (more)and you will stop dcing if you have the unique/legendary tier potential line "% chance to ignore % damage" on any of your equipment. (less)

Another solution I read somewhere on reddit (https://www.reddit.com/r/Maplestory/comments/59snj0/lag_fix_for_anyone_lagging/d9b2lri/) is to wait at the server selection screen for a … (more)while and log in when the lag disappear. (less)