"I would like to thank the 25,000 people who registered for my birthday party. You are all amazing!
"I was looking forward to an awesome event with great live music and other surprises - but the future of New Zealand is more important to me than one night of fun."
Around 25,000 people had registered for the free tickets for the event, which was moved from Shed 10 to Vector Arena due to massive demand.
Dotcom shifted the venue for the `Party Party' from Auckland's Shed 10 to Vector Arena earlier this week due to overwhelming demand.
The party was designed to combine his 40th birthday celebrations with the release of his music album, Good Times.
The event was also scheduled to coincide with the second anniversary of the FBI-initiated raids on Dotcom's Coatesville mansion.
The Electoral Commission confirmed that it had provided advice to Mr Dotcom.
It is illegal for a person to offer food, drink or entertainment for the purpose of winning votes.
I'm really sad right now :-(