Science & Tech · Big Tech & Internet · 2 hrs ago
Au email service disrupted nationwide, while calls and data still work
KDDI reported nationwide problems with au and UQ mobile email starting at 6 a.m.
on Oct.
28.
The disruption affected the carrier email service used by customers of au and UQ mobile in Japan.
Email was unavailable or difficult to use across the country, and the problem was still ongoing at 7:10 a.m.
Voice calls and mobile data continued to work normally, so the disruption was limited to email.
KDDI had not identified the cause or given a restoration estimate.
The cause and repair timing remain unknown, and KDDI said it would share an update when it has more information.
KDDI reported a nationwide disruption affecting the au email service from 6 a.m. on October 28.
Users of au and UQ mobile were unable or found it difficult to use the carrier email service.
Voice calls and data communications continued to work normally.
KDDI said the cause was under investigation and had not given a restoration estimate.
- Who
- KDDI and users of au and UQ mobile email services.
- What
- A nationwide disruption made the email service unavailable or difficult to use.
- When
- It began at 6 a.m. on October 28, 2026, and was still ongoing at 7:10 a.m. that day.
- Where
- Nationwide in Japan.
- Why
- The cause was under investigation. Whether unauthorized access was involved was not known.
This story does not have two clearly opposing sides.
The au email service disruption began.
ITmedia reported that the disruption was continuing.
- Start time
- 6 a.m., October 28, 2026
- Affected services
- au and UQ mobile carrier email
- Geographic scope
- Nationwide
- Unaffected services
- Voice calls and data communications
What people are saying
under investigation