http://mabinogi.nexon.net/News/All/1/00HSz
Dear Players,*
We understand a number of you are still experiencing disconnects and other issues related to HackShield. First and foremost we would like to apologize for the inconvenience and reassure you that addressing this problem is a top priority for our team.*
It seems that a large number of players still being affected are running windows 8 or 8.1 and that a recent Windows Update may have conflicted with the HackShield software. The good news is that we have been hard at work on a fix which has recently been pushed live.
Players who currently have the game installed will have their HackShield automatically updated. This patch will update HackShield to version 407 and address the problem for the majority of players. If you are currently logged into the game, you may need restart your client for this patch to take effect.*
For new players or fresh installs, there will be a HackShield patch going out as part of the maintenance early next week. We anticipate that these two measures will correct the error.*
If any players are still experiencing this problem after the maintenance, we would ask that you post on the below forum thread or send a ticket*and include the following:*
*- A screenshot of the error message,
*- The type of Operating System you have,
*- The date of occurrence,
*- The type of antivirus you have installed.
Our GM team will then work to find you a solution to fix the issue.*
Thank you for your continued support and patience.*
- The Mabinogi Team