The extradition hearing for Kim Dotcom will go ahead next week after nearly four years of delays.
The Court of Appeal has rejected a last-minute bid by Mr Dotcom and his three co-accused for the courts to hear an application to delay the case again.
It has upheld a district court judgement that the application can instead be heard at the start of the extradition hearing, which is scheduled to begin next Monday.
The United States has been trying to extradite Mr Dotcom since January 2012, when he was arrested on copyright and money-laundering charges relating to the now-defunct Megaupload website.
Later that year Mr Dotcom was found to be the subject of illegal spying by the GCSB, after which an independent review of the bureau was ordered.