Can anyone help! I keep getting error 530 code!!

How's it going all, I have been trying to log on to a server but I keep getting the error 530 message that says "Authentication Failed". Anyone know how to fix that problem because I used to be able to log on but now I can't. Do I have to contact the Administrator to help? Any assistance would be greatly appreciated.

jepp, contacting the admin would be the right thing to do. maybe your account was closed / deleted or the password was changed.