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Microsoft が提供する Microsoft 365 のサービス正常性（MO502273）にて、複数の Microsoft 365 サービスにアクセスできない場合がある SI（サービス インシデント）が発生しています。

“MO502273” のサマリー

目次

Users may be unable to access multiple Microsoft 365 services – MO502273

• サービス：Exchange Online、Microsoft 365 suite
• Microsoft Defender for Cloud Apps、Microsoft Intune
• Microsoft Teams、OneDrive for Business、Power BI、SharePoint Online

状態：Service restored

ユーザーへの影響：Users may be unable to access multiple Microsoft 365 services.

Microsoft 365 のサービス正常性（MO502273）にて、複数の Microsoft 365 サービスにアクセスできない場合がある SI（サービス インシデント）が発生していました。

現時点で、以下のサービスに影響していますが、これらに限定されるものではありません。

• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Microsoft 365 管理センター
• – Power BI
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps、Identity、Endpoint

なお、アクセスが行えるユーザーにおいてもサービス内のパフォーマンスが低下している可能性があります。

現在は、モニタリングの結果、影響を受けていたサービスの大部分が復旧し、安定した状態を維持していることを確認しました。

なお、Outlook on the web（OWA）上からアクセスした場合の Exchange Online への影響については、サービス正常性の “EX502694” にて引き続き調査を行っています。

この問題は、WAN（Wide Area Networking）のルーティング変更により、該当するインフラストラクチャー内のユーザーが複数の Microsoft 365 サービスにアクセスが行えなくなった問題になります。

5 営業日以内に PIR（Post – Incident Report）を発行予定です。

January 25, 2023 11:28 PM – Service restored

• ・Title : Users may have been unable to access multiple Microsoft 365 services
• ・User Impact : Users may have been unable to access multiple Microsoft 365 services.
• ・More info : Impact was to the following services, but was not limited to them :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Power BI
• – Microsoft 365 admin portal
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps, Identity and Endpoint.
• Users who could access may have experienced degraded feature functionality within the services.
• ・Final status : We’ve confirmed, after a period of monitoring, that the majority of impacted services have been recovered and remain stable.
• We’re investigating some potential impact to the Exchange Online Service when connecting through Outlook on the web.
• For further information on the impact to the Exchange Online service please see EX502694 in the Service Health Dashboard.
• ・Scope of impact : Any user serviced by the affected infrastructure may have unable to access multiple Microsoft 365 services.
• ・Start time : Wednesday, January 25, 2023, 4:05 PM (7:05 AM UTC)
• ・End time : Wednesday, January 25, 2023, 9:43 PM (12:43 PM UTC)
• ・Preliminary root cause : A wide-area networking (WAN) routing change resulted in users being unable to access multiple Microsoft 365 services.
• We’ll publish a post-incident report within five business days.

January 25, 2023 9:59 PM – Service restored

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・More info: Impact is occurring to the following services but is not limited to them :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Power BI
• – Microsoft 365 admin portal
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps, Identity and Endpoint.
• Users who can access may experience degraded feature functionality within the services.
• ・Current status : The majority of the services have recovered and remain stable.
• However, we’re investigating limited residual impact within the Exchange Online service and we’re performing targeted mitigations to resolve the issue.
• ・Scope of impact : Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
• ・Root cause : A wide-area networking (WAN) routing change is causing impact to the multiple services.
• ・Next update by : Wednesday, January 25, 2023, 11:00 PM (2:00 PM UTC)

January 25, 2023 9:44 PM · クイック更新 – Service restored

• The majority of services have recovered, and the service is stable.
• Engineers are continuing to take actions to investigate and mitigate any residual impact caused by this incident.
• This quick update is designed to give the latest information on this issue.

January 25, 2023 8:58 PM – Service restored

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・More info : Impact is occurring to the following services but is not limited to them :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Power BI
• – Microsoft 365 admin portal
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps, Identity and Endpoint.
• ・Current status : We’re monitoring telemetry which continues to show that the service is stable, and the majority of users are able to access the service successfully.
• We’re continuing to monitor the service and take actions to confirm full recovery.
• ・Scope of impact : Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
• ・Root cause : A wide-area networking (WAN) routing change is causing impact to the multiple services.
• ・Next update by : Wednesday, January 25, 2023, 10:00 PM (1:00 PM UTC)

January 25, 2023 8:30 PM · クイック更新 – Service restored

• Our telemetry indicates that the impact is no longer occurring for most customers.
• We’re continuing to take mitigation actions to ensure full recovery.
• This quick update is designed to give the latest information on this issue.

January 25, 2023 8:00 PM · クイック更新 – Service restored

• We’re continuing to take additional steps to expedite the recovery process.
• Our telemetry indicates that majority of the customers have now mitigated.
• This quick update is designed to give the latest information on this issue.

January 25, 2023 7:26 PM · クイック更新 – Service restored

• We’re continuing to monitor the recovery across the service and customers are also reporting mitigation.
• We’re also connecting the service to additional infrastructure to expedite the recovery process.
• This quick update is designed to give the latest information on this issue.

January 25, 2023 6:51 PM – Service restored

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・More info : Impact is occurring to the following services but is not limited to them :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Power BI
• – Microsoft 365 admin portal
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps, Identity and Endpoint.
• ・Current status : We’ve identified that a wide-area networking (WAN) routing change caused impact to the service.
• We’ve rolled back the change and monitoring the service as it recovers.
• Some of the customers who had previously reported impact are also reporting recovery.
• ・Scope of impact : Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
• ・Next update by : Wednesday, January 25, 2023, 9:00 PM (12:00 PM UTC)

January 25, 2023 6:19 PM · クイック更新 – Service restored

• We’ve rolled back a network change that we believe is causing impact.
• We’re monitoring the service as the rollback takes effect.
• This quick update is designed to give the latest information on this issue.

January 25, 2023 5:49 PM – Service restored

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・More info : Impact is occurring to the following services but is not limited to them :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• – Power BI
• – Microsoft 365 admin portal
• – Microsoft Intune
• – Microsoft Defender for Cloud Apps, Identity and Endpoint.
• ・Current status : We’ve isolated the problem to a networking configuration issue, and we are analyzing the best mitigation strategy to address it without causing additional impact.
• We’ll provide more information once we have additional information.
• ・Scope of impact : Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
• ・Next update by : Wednesday, January 25, 2023, 8:00 PM (11:00 AM UTC)

January 25, 2023 4:51 PM – Service restored

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・More info : We’ve received reports that the following services are impacted :
• – Microsoft Teams
• – Exchange Online
• – Outlook
• – SharePoint Online
• – OneDrive for Business
• – Microsoft Graph
• ・Current status : We’ve identified a potential networking issue and are reviewing telemetry to determine the next troubleshooting steps.
• ・Scope of impact : Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
• ・Next update by : Wednesday, January 25, 2023, 6:00 PM (9:00 AM UTC)

January 25, 2023 4:27 PM

• ・Title : Users may be unable to access multiple Microsoft 365 services
• ・User Impact : Users may be unable to access multiple Microsoft 365 services.
• ・Current status : We’re investigating a potential issue and checking for impact to your organization.
• We’ll provide an update within 30 minutes.

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関連リンク

• ・Microsoft Exchange | 企業に役立つ安全なビジネス メール サービス：https://www.microsoft.com/ja-jp/microsoft-365/exchange/email
• ・Microsoft Teams｜リモート ワークのためのコラボレーション ツール：https://www.microsoft.com/ja-jp/microsoft-365/microsoft-teams/group-chat-software
• ・Microsoft SharePoint｜イントラネットとコラボレーション ソリューション：https://www.microsoft.com/ja-jp/microsoft-365/sharepoint/collaboration
• ・Microsoft 365 – サブスクリプションで Office アプリを使用｜Microsoft 365：
• ・日本マイクロソフト – Official Home Page：https://www.microsoft.com/ja-jp

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