KCDC: "Kub App Error Overload Caused by Issue at KT Cloud Center Hosting Server" (Comprehensive Report 2)

On the 13th, a notice about the application of the quarantine pass was posted at a restaurant in downtown Seoul. From this day forward, to use major indoor multi-use facilities such as restaurants, cafes, academies, and libraries, proof of vaccination or a negative COVID-19 test result is required. Violators will be fined, including both business owners and users. Photo by Kim Hyun-min kimhyun81@

[Asia Economy reporters Seo So-jung and Kang Na-hum] On the first day of the COVID-19 quarantine pass enforcement on the 13th, citizens experienced inconvenience due to errors in Naver, Kakao, and the QOOV (electronic vaccination certificate) app, and the Korea Disease Control and Prevention Agency (KDCA) stated, "It has been identified that there was a 'connection overload' issue at the KT DS Cloud Center where the QOOV server is located."

At the regular briefing that day, the KDCA explained, "Currently, it is understood that the QOOV server located at the KT DS Cloud Center was not processing smoothly due to connection overload, and we are investigating the cause. Advance reservations are still operating without any special issues, and regarding the QOOV server, we are in consultation with related agencies for functional improvements."

According to the quarantine authorities, from around 11:30 a.m. that day, the QOOV app, the KDCA’s vaccine certification app, experienced connection failures, causing users difficulties in proving their vaccination status. Similar errors also occurred in the QR code systems of Naver and Kakao, making them difficult to use.

Since the connection failure occurred during lunchtime, citizens’ inconveniences continued. Some citizens had to turn back at restaurant entrances because the QR code did not appear, and posts about wasting 20 to 30 minutes due to delayed QR code generation kept appearing on online communities.

The KDCA apologized, saying, "We apologize for the inconvenience caused in using the electronic entry log or the QOOV app," and added, "Related agencies are conducting consultations to normalize usage, and after emergency measures are taken, we will announce the cause and measures to prevent recurrence."

Naver and Kakao also confirmed, "We have identified errors in QR code generation," and said, "We are currently assessing the situation."

Meanwhile, starting from this day, fines and other penalties will be imposed for violating quarantine pass guidelines at multi-use facilities such as restaurants and cafes. To enter facilities where the quarantine pass is applied, one must submit a vaccination certificate or a negative PCR test result.

This content was produced with the assistance of AI translation services.