I have tried to repair launcher but did not work.When I wanted to login to the EU server , I take Error 303 or 306 .Is there any solution to fix this problem ?.
I think DnsFlush method works for Error 303 . I opened the windows command console with typing cmd on the search box and typed ipconfig/flushdns to command row and finally i pushed to enter.
When my character was in Wrotghar , I am having this issue.I think this problem is about server busy.After this patch probably they gonna fix this issue.
I found the main problem.The problem is about Master Merchant Addon.This addon eats too much ram in the game.If you have minimum or low system like mine , you have this login issue problem possibly.