STUTTERING SERVICE: Not all of NZ's cricket fans are as happy as Trent Boult.

Sky's online service Sky Go struggled to show Kiwis the cricket this afternoon, but the company now claims the service is working as it should be.

A host of subscribers to the paid service took to social media to complain, saying the live-streaming service couldn't handle the increased demand brought on by today's match.

Sky Go lets Sky TV subscribers watch live Sky broadcasts from an app or website.

"This is the one and only time I've ever tired to use the service and it's falling down," said Tanja Clarke of Auckland.

"It's embarrassing because I'm trying to use it so my workmates can watch."

She had called the helpline and recieved an automated message saying Sky were having technical issues.



"I mean no s***."

Sky said it was prepared for the onslaught of traffic for the semifiinal.

"Operationally we knew that there would be a lot of traffic, so we take extra care and there is additional support in place in case any issues do come up," said Sky spokeswoman Kirsty Way.

Way said the issue was related to the authentication process, not capacity.

"There was an hour or so where no new viewers could come on, but that has been rectified," Way said.

Sky had not added extra capacity for the game.

Viewership numbers could not be released, but more than 20,000 people had downloaded the Sky Go app on their phones or tablets.

Given the timing of game in the middle of a working day, a large spike was likely.