Thread:Project:Support desk/Can't contact the database server: Access denied for user 'wikiuser'@'localhost' (using password: NO) (localhost))/reply (21)

Your error message shows that MediaWiki uses the MySQL username "livinhp8_wiki" as $wgDBuser. When you are at it, please verify that "box285.bluehost.com" is the correct value for $wgDBserver! Also the name of the DB must be correct.

Finally a

GRANT ALL PRIVILEGES ON database_name TO user@host IDENTIFIED BY 'password'; FLUSH PRIVILEGES;

in MYSQL should give the according rights and clear the priv cache.