I’m getting Error Code: 11001 No such host is known.

Here are some troubleshooting steps if you are receiving this error code.

  1. Try refreshing or reloading the screen on your browser. (For most browsers press F5)
  2. Open you MapleStory folder and right click on the file Gamelauncher.exe and run it as administrator.
  3. Uninstall MapleStory, download the Nexon Launcher and download MapleStory using the Nexon Launcher.
  4. Clear your Browsers Cache.

For Internet Explorer:

  • Click on Tools, select Internet Options and click on Temporary Internet files (or “Delete…”) from the General tab. Select “Delete Files”. This may take several minutes.

For Firefox:

  • Click on Tools, select “Clear Private Data” and then click on “Clear Private Data Now”.

For Chrome:

  • Click on Settings then scroll to the bottom of the page and click on advance settings.
  • Under privacy click on Clear browsing data and make sure you check the boxes for the first four items. You can leave the dropdown box at “The past hour. Then click on Clear browsing data.
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