Microsoft Outlook

【トラブルシューティング】一部のユーザーが Outlook on the web から Exchange Online のメールボックスにアクセスが行えないことがある SI(サービス インシデント)が発生【EX421831】【復旧済み】

トラブルシューティング(Windows)
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Microsoft Outlook
Microsoft Outlook

Microsoft が提供する Microsoft 365 のサービス正常性(EX439381)にて、一部のユーザーが Outlook on the web から Exchange Online のメールボックスにアクセスが行えないことがある SI(サービス インシデント)が発生しています。

本事象の影響を受けている場合、ユーザーが Outlook on the web(OWA)を経由して、Exchange Online のメールボックスにアクセスできなくなる可能性がある問題なります。

この問題は、アーカイブとプライマリのメールボックスがデータベース基盤の同じサブセットに配置されている一部の固有のユーザーにて発生していたものになります。

なお、管理者は、”Get-Mailbox” または “Get-MailboxLocation” を実行して、アーカイブとプライマリのメールボックスが同じデータベース インフラストラクチャーにあるかどうかを確認できます。

現在は、既に影響を受けているユーザーでの事象の改善が確認されています。

本事象は、ユーザー ディレクトリ機能のアップデートによってコードの問題が発生し、同じデータベース インフラストラクチャー上にアーカイブとプライマリ メールボックスを持つ一部のユーザーが、Outlook on the web(OWA)を経由してメールボックスにアクセスできないコードの問題により発生した問題になります。

今後は、同様の影響を防止するため、最近の機能アップデートで、どのようにコードの問題が発生したかを調査しています。

この問題は、アーカイブとプライマリのメールボックスが同じデータベース インフラストラクチャーのサブセットに配置されている一部のユーザーに影響が出る可能性がある事象になります。

目次






Some users may be unable to access their Exchange Online mailboxes via Outlook on the web – EX439381

サービス:Exchange Online

状態:Service restored

ユーザーへの影響:Users may be unable to access their Exchange Online mailboxes via Outlook on the web.

Microsoft 365 のサービス正常性(EX439381)にて、一部のユーザーが Outlook on the web から Exchange Online のメールボックスにアクセスが行えないことがある SI(サービス インシデント)が発生しています。

本事象の影響を受けている場合、ユーザーが Outlook on the web(OWA)を経由して、Exchange Online のメールボックスにアクセスできなくなる可能性がある問題なります。

この問題は、アーカイブとプライマリのメールボックスがデータベース基盤の同じサブセットに配置されている一部の固有のユーザーにて発生していたものになります。

なお、管理者は、”Get-Mailbox” または “Get-MailboxLocation” を実行して、アーカイブとプライマリのメールボックスが同じデータベース インフラストラクチャーにあるかどうかを確認できます。

現在は、既に影響を受けているユーザーでの事象の改善が確認されています。

本事象は、ユーザー ディレクトリ機能のアップデートによってコードの問題が発生し、同じデータベース インフラストラクチャー上にアーカイブとプライマリ メールボックスを持つ一部のユーザーが、Outlook on the web(OWA)を経由してメールボックスにアクセスできないコードの問題により発生した問題になります。

今後は、同様の影響を防止するため、最近の機能アップデートで、どのようにコードの問題が発生したかを調査しています。

この問題は、アーカイブとプライマリのメールボックスが同じデータベース インフラストラクチャーのサブセットに配置されている一部のユーザーに影響が出る可能性がある事象になります。

September 30, 2022 2:18 PM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may have been unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・More info : The impact was specific to some users who had archive and primary mailboxes located on the same subset of database infrastructure.
  • Admins could run Get-Mailbox or Get-MailboxLocation to find out if archive and primary mailboxes were located on the same database infrastructure.
  • ・Final status : We’ve finished reaching out to previously affected users and have confirmed impact has been remediated.
  • ・Scope of impact : Some users whose archive and primary mailboxes were located on the same subset of database infrastructure may have been impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・End time : Friday, September 30, 2022, 5:00 AM (9/29/2022, 8:00 PM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that was preventing some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next steps : – We’re investigating how the code issue was introduced in the recent feature update so we can prevent similar impact in the future.
  • This is the final update for the event.

September 30, 2022 6:24 AM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・More info : The impact is specific to some users who have archive and primary mailboxes located on the same subset of database infrastructure.
  • Admins can run Get-Mailbox or Get-MailboxLocation to find out if archive and primary mailboxes are located on the same database infrastructure.
  • ・Current status : The deployment of the fix has finished successfully and we’re reaching out to affected users to confirm remediation.
  • ・Scope of impact : Some users whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that is preventing some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by: Friday, September 30, 2022, 3:30 PM (6:30 AM UTC)

September 30, 2022 3:25 AM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・More info : The impact is specific to some users who have archive and primary mailboxes located on the same subset of database infrastructure.
  • Admins can run Get-Mailbox or Get-MailboxLocation to find out if archive and primary mailboxes are located on the same database infrastructure.
  • ・Current status : We’ve completed applying the change to an impacted user and then performed validation and testing, which confirmed remediation for that user.
  • We’re now preparing to apply the fix to all remaining affected users to fully resolve the issue.
  • ・Scope of impact : Some users whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that is preventing some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by : Friday, September 30, 2022, 6:00 AM (9/29/2022, 9:00 PM UTC)

September 29, 2022 4:58 PM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・More info : The impact is specific to some users who have archive and primary mailboxes located on the same subset of database infrastructure.
  • Admins can run Get-Mailbox or Get-MailboxLocation to find out if archive and primary mailboxes are located on the same database infrastructure.
  • ・Current status : We’re continuing to apply the new change and are monitoring its progress.
  • ・Scope of impact : Some users whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that is preventing some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by : Friday, September 30, 2022, 3:30 AM (9/29/2022, 6:30 PM UTC)

September 29, 2022 2:32 PM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・More info : The impact is specific to some users who have archive and primary mailboxes located on the same subset of database infrastructure.
  • Admins can run Get-Mailbox or Get-MailboxLocation to find out if archive and primary mailboxes are located on the same database infrastructure.
  • ・Current status : We’ve confirmed via telemetry and with some affected users that the operation didn’t resolve the issue.
  • We’re applying a new change in stages to verify that it will successfully remediate the impact.
  • ・Scope of impact : Some users whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that is preventing some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by : Thursday, September 29, 2022, 4:30 PM (7:30 AM UTC)

September 29, 2022 4:28 AM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・Current status : We’ve completed our operation to disable the code path containing the offending update, and we’re awaiting word from the representatives of affected users to confirm whether this action has remediated impact.
  • ・Scope of impact : Any user whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that prevents some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by: Thursday, September 29, 2022, 2:30 PM (5:30 AM UTC)

September 28, 2022 1:00 PM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・Current status : The process of disabling the specific code set including the offending update is ongoing.
  • We’ll provide a remediation timeline when one becomes available.
  • ・Scope of impact : Any user whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Start time : Monday, August 22, 2022, 6:03 PM (9:03 AM UTC)
  • ・Root cause : A user directory feature update introduced a code issue that prevents some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by: Thursday, September 29, 2022, 5:00 AM (9/28/2022, 8:00 PM UTC)

September 28, 2022 5:07 AM – Service restored

  • ・Title : Some users may be unable to access their Exchange Online mailboxes via Outlook on the web
  • ・User Impact : Users may be unable to access their Exchange Online mailboxes via Outlook on the web.
  • ・Current status : We’ve initiated the process of disabling the specific code set including the offending update to remediate the impact.
  • We expect to have a more accurate estimation for impact resolution by our next update.
  • ・Scope of impact : Any user whose archive and primary mailboxes are located on the same subset of database infrastructure may be impacted.
  • ・Root cause : A user directory feature update introduced a code issue that prevents some users with an archive and primary mailbox on the same database infrastructure from accessing their mailboxes via Outlook on the web.
  • ・Next update by : Wednesday, September 28, 2022, 2:30 PM (5:30 AM UTC)

September 27, 2022 10:29 PM – Service restored

  • ・Title : Some users aren’t able to access their Exchange Online mailbox via Outlook on the web
  • ・User Impact : Users aren’t able to access their Exchange Online mailbox via Outlook on the web.
  • ・Current status : We’ve determined that a recent service update inadvertently contains a code regression, resulting in users being unable to access their Outlook on web mailboxes.
  • We’re executing a temporary workaround of relocating affected archive mailboxes, while a permanent fix is developed and validated.
  • ・Scope of impact : Your organization is affected by this event, and some users attempting to access their mailbox via Outlook on the web are impacted.
  • ・Next update by : Wednesday, September 28, 2022, 5:00 AM (9/27/2022, 8:00 PM UTC)

September 27, 2022 8:38 PM – Service restored

  • ・Title : Some users aren’t able to access their Exchange Online mailbox via Outlook on the web
  • ・User Impact : Users aren’t able to access their Exchange Online mailbox via Outlook on the web.
  • ・Current status : We’re continuing to analyze support provided information to isolate the root cause and establish a fix.
  • ・Scope of impact : Your organization is affected by this event, and some users attempting to access their mailbox via Outlook on the web are impacted.
  • ・Next update by : Tuesday, September 27, 2022, 11:00 PM (2:00 PM UTC)

September 27, 2022 7:09 PM – Service restored

  • ・Title : Some users aren’t able to access their Exchange Online mailbox via Outlook on the web
  • ・User Impact : Users aren’t able to access their Exchange Online mailbox via Outlook on the web.
  • ・Current status : We’ve received reports that impact associated with EX437511 persists.
  • We’re analyzing newly provided support information to determine our next troubleshooting steps.
  • ・Scope of impact : Your organization is affected by this event, and some users attempting to access their mailbox via Outlook on the web are impacted.
  • ・Next update by : Tuesday, September 27, 2022, 9:00 PM (12:00 PM UTC)

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