Notification on the whole support site - NTT DOCOMO BUSINESS
https://support.ntt.com/en/supportTopInfo/
Latest information on NTT DOCOMO BUSINESS.[recover] Some inquiry forms on the Customer Support Site are currently unavailable (Posted September 4, 2026, 21:30)
https://support.ntt.com/en/supportTopInfo/detail/pid2500002gs9
2026-09-04T12:30:00Z[Completed] 9/2(Wed) 21:00 - 9/3(Thu) 07:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002gnu
2026-09-03T00:20:00Z【Completed】8/19(Wed) 21:00 - 8/20(Thu) 07:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002gjm
2026-08-19T20:55:00Z【Postponement】7/14(Tue) 21:00 - 7/15(Wed) 07:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002g49
2026-07-09T09:10:00Z【Completed】3/11(Wed) 22:00 - 3/12(Thu) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002e2h
2026-03-11T14:10:00Z【Completed】11/20(Thu) 22:00 - 11/21(Fri) 02:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002ccr
2025-11-20T14:04:00Z【completed】09/26(Fri) 00:00 - 03:30 support site system maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002bmh
2025-09-25T16:10:00Z【completed】8/5(Tue) 22:00 - 8/6(Wed) 02:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002avh
2025-08-05T14:15:00Z【completed】07/28(Mon) 22:00 - 07/29 (Tue) 02:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid2500002abt
2025-07-28T14:10:00Z【completed】06/26(Thu) 22:00 - 06/27 (Fri) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid25000029ln
2025-06-26T15:10:00Z【completed】12/16 (Mon) 22:00 - 12/17 (Tue) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid25000025cl
2024-12-16T15:55:00Z【completed】9/10 (Tue) 22:00 - 9/11 (Wed) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid250000242s
2024-09-10T13:55:00Z【completed】8/8 (Thu) 22:00 - 8/9 (Fri) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid25000023dh
2024-08-08T14:20:00Z【completed】5/29 (Wed) 22:00 - 5/30 (Thu) 01:00 support site maintenance notice
https://support.ntt.com/en/supportTopInfo/detail/pid25000021z6
2024-05-29T14:40:00ZInformation on the end of Windows 8.1 support for ID Federation and device authentication option service
https://support.ntt.com/en/id-federation/information/detail/pid2500001qvg
2022-12-09T04:30:00Z