J:COM internet and TV services disrupted across parts of Japan

A large-scale service disruption affected J:COM internet and related services across parts of Japan on September 23, 2026. The outage lasted approximately nine hours, beginning around 8:55 AM and continuing until approximately 6:00 PM.

The disruption impacted several services, including J:COM NET internet connectivity, J:COM TV interactive and video streaming services, J:COM MOBILE internet, and internet services provided to cable TV operators. Reports of connectivity issues were noted in areas such as Ichikawa City, Chiba Prefecture, starting around 9:00 AM.

J:COM's official support via X (formerly Twitter) issued an announcement at approximately 10:24 AM, roughly an hour and a half after the initial failure. The company noted that the outage also made it difficult for customers to reach support and customer service centers. As of the latest updates, the cause of the disruption remains under investigation, and the company stated it is working toward identifying the cause and implementing preventative measures.