South Korean popular messaging app KakaoTalk suffers worst server outage.

Fire at data centre causes KakaoTalk to go down.

south korean messaging app kakao talk app image

On October 15 KST at approximately 3:30 PM, a fire that started in the third-floor battery room of the SK C&C Data Centre in Pangyo affected KakaoTalk and similar services, including mobile payment service KakaoPay, making them inoperable until roughly 2 AM the next morning.

No casualty was reported and the fire was limited to an electric room, an SK CC official said.

A message delivery failure and login error occurred for all the users around the world.

As of roughly a full day, Kakao VP Yang Hyun Seo informed the press that, while Kakao services are up and running again, only 16,000 of the 32,000 servers affected by the fire have been restored, meaning there may still be some technical difficulties.

“Because the entire power supply is cut off, it takes a lot of time to switch traffic even with redundancy measures,” he continued. “The fact that all 32,000 servers went down is an unprecedented situation in the IT industry.”

“It usually takes less than 20 minutes to restore all of the servers, but the extent of server losses is just so massive,” he added, declining to say how long it would take for KakaoTalk and other affiliated services to return to normal.

As of 5 p.m. KakaoTalk users could exchange text messages only, not photos and videos.


KakaoTalk , is a South Korean mobile messaging app for smartphones operated by Kakao Corporation.

It was launched on March 18, 2010, and it is available on mobile and desktop platforms. KakaoTalk provides free calling and messaging services.

Like most of its type, the user is able to share photos, videos, voice messages, locations, webpage links, and contact information. Users are able to create one-on-one conversations, as well as group chats with no limit on users. It allows the user to synchronize contact lists to connect to friends who also use the service, among other options that provide this service.

As of May 2017, KakaoTalk had 220 million registered and 49 million monthly active users. It is available in 15 languages. The app is also used by 93% of smartphone owners in South Korea, where it is the most widely used messaging app for smart phones and personal computers.

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