【トラブルシューティング】Outlook on the web（OWA）にアクセスが行えない場合や Microsoft 365 サービスの一部の機能を利用できない可能性がある SI（サービス インシデント）が発生【MO289250】【サービス復旧】

Microsoft が提供する Microsoft 365 のサービス正常性（MO289250）にて、ユーザーが Outlook on the web（OWA） にアクセスが行えない場合や Microsoft 365 サービスの一部の機能を利用できない可能性がある問題が発生していることを発表しています。

この問題により以下のシナリオがユーザーに影響する可能性があります。

• ・ユーザーが、Outlook on the web（OWA）にアクセスできない場合があります。
• ・Exchange Online、Microsoft Teams、SharePoint Online 内での検索機能が利用できない場合があります。
• ・Exchange Online や Microsoft Teams に関する eDiscovery のデータへのアクセスができない場合があります。
• ・Microsoft Teams に最近アップロードしたアイテムに一時的にアクセスできない場合があります。
• ・Microsoft Security Center（MSC）および Security and Compliance Center（SCC）へのサインインに影響があり、ユーザーがポリシーを読み込む際に “リソースが見つかりません” というエラー メッセージが表示された可能性があります。
• また、これらの他のシナリオとして、権限／ロール ベース アクセス コントロール（RBAC）のエラーが発生する可能性があります。
• ・オンプレミスのメール フローでキューイングが発生した可能性もありますが、影響は最小限に抑えられているはずです。

現在、サービスの可用性について許容レベルに達し、広範なモニタリングにより、影響を受けていたすべての環境で、この問題が関われていることを確認しています。

なお、この問題の発生の要因となったアップデートの原因を分析し、問題の再発を防ぐとのことです。

※ 5 営業日以内に PIR（Post-Incident Report）が公開される予定となっています。

なお、同事象については、公式 Twitter でも発表されています。

We’re investigating an issue affecting user access for Outlook desktop and mobile clients and https://t.co/DVdzBCeWlJ. More information will be provided in the admin center under EX289214, and at https://t.co/2uCbkBcRkP.

— Microsoft 365 Status (@MSFT365Status) October 4, 2021

Correction to the previously provided status page URL, more information can be found at https://t.co/k4X04c52ZD or the admin center under EX289214. We’re gathering and analyzing diagnostic data from the impacted services to determine the cause of the problem.

— Microsoft 365 Status (@MSFT365Status) October 4, 2021

We’ve confirmed that a recent configuration update is causing mailbox access issues for Outlook desktop, Outlook on the web, https://t.co/ZUfyjsZv4k and other mobile connection methods. We’re reverting this change to mitigate impact.

— Microsoft 365 Status (@MSFT365Status) October 5, 2021

Our investigation has determined that other Microsoft 365 services such as Microsoft Teams and SharePoint Online may be experiencing issues when performing searches. Further information can be found in our new post, MO289250 within the admin center.

— Microsoft 365 Status (@MSFT365Status) October 5, 2021

We’re continuing to see further improvement on the service. More information can be found at MO289250 or OL289238 within the admin center.

— Microsoft 365 Status (@MSFT365Status) October 5, 2021

We’ve completed our mitigation efforts and
we’ve confirmed via extensive monitoring that the issue has been fully resolved. More information can be found at MO289250 or OL289238 within the admin center.

— Microsoft 365 Status (@MSFT365Status) October 5, 2021

Microsoft 365 suite 関連記事一覧

Microsoft 365 suite のメッセージ センター関連情報一覧

Microsoft 365 suite サービス正常性 関連記事一覧

Users may be unable to access Outlook on the web or use some features across Microsoft 365 services – MO289250

サービス：Microsoft 365 suite

状態：Service restored

ユーザーへの影響：Users may be unable to access Outlook on the web or utilize some features across Microsoft 365 services.

Microsoft 365 のサービス正常性（MO289250）にて、ユーザーが Outlook on the web（OWA） にアクセスが行えない場合や Microsoft 365 サービスの一部の機能を利用できない可能性がある問題が発生していることを発表しています。

この問題により以下のシナリオがユーザーに影響する可能性があります。

• ・ユーザーが、Outlook on the web（OWA）にアクセスできない場合があります。
• ・Exchange Online、Microsoft Teams、SharePoint Online 内での検索機能が利用できない場合があります。
• ・Exchange Online や Microsoft Teams に関する eDiscovery のデータへのアクセスができない場合があります。
• ・Microsoft Teams に最近アップロードしたアイテムに一時的にアクセスできない場合があります。
• ・Microsoft Security Center（MSC）および Security and Compliance Center（SCC）へのサインインに影響があり、ユーザーがポリシーを読み込む際に “リソースが見つかりません” というエラー メッセージが表示された可能性があります。
• また、これらの他のシナリオとして、権限／ロール ベース アクセス コントロール（RBAC）のエラーが発生する可能性があります。
• ・オンプレミスのメール フローでキューイングが発生した可能性もありますが、影響は最小限に抑えられているはずです。

現在、サービスの可用性について許容レベルに達し、広範なモニタリングにより、影響を受けていたすべての環境で、この問題が関われていることを確認しています。

なお、この問題の発生の要因となったアップデートの原因を分析し、問題の再発を防ぐとのことです。

※ 5 営業日以内に PIR（Post-Incident Report）が公開さえる予定となっています。

October 5, 2021 3:01 PM – Service restored

• ・Title : Users may be unable to access Outlook on the web or use some features across Microsoft 365 services
• ・User Impact : Users may have been unable to access Outlook on the web or utilize some features across Microsoft 365 services.
• ・More info : The following impact scenarios may have affected your users :
• -Users may have been unable to access Outlook on the web.
• -The search feature may have not worked in Exchange Online, Microsoft Teams, and SharePoint Online.
• -eDiscovery data may have been inaccessible for Exchange Online or Microsoft Teams.
• -Uploaded files to Microsoft Teams may have been temporarily inaccessible.
• -Microsoft Security Center (MSC) and Security and Compliance Center (SCC) sign in may have been impacted and users may have run into “Resource not found” errors when loading policies.
• Additionally, other scenarios in those centers may have shown permissions/Role Based Access Control (RBAC) errors.
• -On-premises mailflow could’ve caused queuing although impact should’ve been minimally impacting.
• ・Final status : We’ve reached acceptable levels of service availability and confirmed via extensive monitoring that the the issue has been mitigated for all previously impacted environments.
• ・Scope of impact : This issue could’ve affected any user attempting to access Outlook on the web or other Microsoft 365 services and features as listed in the more info section.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・End time : Tuesday, October 5, 2021, 2:30 PM (5:30 AM UTC)
• ・Preliminary root cause : A recent configuration update was preventing users from accessing Outlook on the web or using some features across multiple Microsoft 365 services.
• ・Next steps : We’re analyzing what caused our configuration update failure and prevent this from happening again.
• We’ll publish a post-incident report within five business days.

October 5, 2021 1:29 PM – Service restored

• ・Title : Users may be unable to access Outlook on the web or use some features across Microsoft 365 services
• ・User Impact : Users may be unable to access Outlook on the web or utilize some features across Microsoft 365 services.
• ・More info : The following impact scenarios may affect your users :
• -Users may be unable to access Outlook on the web.
• -The search feature may not be working in Exchange Online, Microsoft Teams, and SharePoint Online.
• -eDiscovery data may not be accessible for Exchange Online or Microsoft Teams.
• -Recently uploaded files to Microsoft Teams may be temporarily inaccessible.
• -Microsoft Security Center and Security and Compliance Center sign in may also be impacted and users may run into “Resource not found” errors when loading policies.
• Additionally, other scenarios in those centers may show permissions/Role Based Access Control (RBAC) errors.
• – On-premises mailflow could cause queuing although impact should be minimally impacting.
• ・Current status : Our monitoring continues to indicate improvement across all of the affected environments.
• Concurrently, we’re continuing with our targeted mitigation strategy and are at approximately 90 percent recovery.
• We’ll continue to monitor progress and provide updates as available.
• ・Scope of impact : Impact is specific to users who are served through the affected infrastructure.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・Root cause : A recent configuration update may be preventing users from accessing Outlook on the web or using some features across multiple Microsoft 365 services.
• ・Next update by : Tuesday, October 5, 2021, 4:00 PM (7:00 AM UTC)

October 5, 2021 12:27 PM · クイック更新 – Service restored

We’re continuing with our mitigation efforts and are seeing further service availability improvements.

This quick update is designed to give the latest information on this issue.

October 5, 2021 12:12 PM – Service restored

• ・Title : Users may be unable to access Outlook on the web or use some features across Microsoft 365 services
• ・User Impact : Users may be unable to access Outlook on the web or utilize some features across Microsoft 365 services.
• ・More info : The following impact scenarios may affect your users :
• -Users may be unable to access Outlook on the web.
• -The search feature may not be working in Exchange Online, Microsoft Teams, and SharePoint Online.
• -eDiscovery data may not be accessible for Exchange Online or Microsoft Teams.
• -Recently uploaded files to Microsoft Teams may be temporarily inaccessible.
• -Microsoft Security Center and Security and Compliance Center sign in may also be impacted and users may run into “Resource not found” errors when loading policies.
• Additionally, other scenarios in those centers may show permissions/Role Based Access Control (RBAC) errors.
• ・Current status : While were working on recovery to all regions, we’ve added additional focus on mitigating impact to the European region as they approach their business day.
• We’ll provide a more detailed timeline when possible.
• ・Scope of impact : Impact is specific to users who are served through the affected infrastructure.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・Root cause : A recent configuration update may be preventing users from accessing Outlook on the web or using some features across multiple Microsoft 365 services.
• ・Next update by : Tuesday, October 5, 2021, 2:00 PM (5:00 AM UTC)

October 5, 2021 11:52 AM · クイック更新 – Service restored

We’re continuing with our targeted restarts and we’re seeing constant service availably improvements.

This quick update is designed to give the latest information on this issue.

October 5, 2021 11:17 AM · クイック更新 – Service restored

We’re continuing with our targeted restarts on the impacted infrastructure and we’re seeing further availability improvement.

This quick update is designed to give the latest information on this issue.

October 5, 2021 10:48 AM – Service restored

• ・Title : Users may be unable to access Outlook on the web or use some features across Microsoft 365 services
• ・User Impact : Users may be unable to access Outlook on the web or utilize some features across Microsoft 365 services.
• ・More info : The following impact scenarios may affect your users :
• -Users may be unable to access Outlook on the web.
• -The search feature may not be working in Exchange Online, Microsoft Teams, and SharePoint Online.
• -eDiscovery data may not be accessible for Exchange Online or Microsoft Teams.
• -Recently uploaded files to Microsoft Teams may be temporarily inaccessible.
• ・Current status : We’re observing that service is steadily recovering in a portion of infrastructure that we have both reverted the offending update and restarted services.
• We are following the same mitigation steps in other sections of the affected infrastructure to restore service.
• ・Scope of impact : Impact is specific to users who are served through the affected infrastructure.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・Root cause : A recent configuration update may be preventing users from accessing Outlook on the web or using some features across multiple Microsoft 365 services.
• ・Next update by : Tuesday, October 5, 2021, 12:00 PM (3:00 AM UTC)

October 5, 2021 10:35 AM – クイック更新 – Service restored

Our validation process indicates a slight improvement on some of the impacted infrastructure.

We’re continuing to validate the version and restarts will properly mitigate impact.

This quick update is designed to give the latest information on this issue.

October 5, 2021 9:55 AM

• ・Title : Users may be unable to access Outlook on the web or use some features across Microsoft 365 services
• ・User Impact : Users may be unable to access Outlook on the web or utilize some features across Microsoft 365 services.
• ・More info : The following impact scenarios may affect your users :
• -Users may be unable to access Outlook on the web.
• -The search feature may not be working in Exchange Online, Microsoft Teams, and SharePoint Online.
• -eDiscovery data may not be accessible for Exchange Online or Microsoft Teams.
• -Recently uploaded files to Microsoft Teams may be temporarily inaccessible.
• ・Current status : We’ve identified that a recent configuration update is contributing to impact.
• We have reverted this update and in addition, we are restarting services to mitigate impact.
• ・Scope of impact : Impact is specific to users who are served through the affected infrastructure.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・Root cause : A recent configuration update may be preventing users from accessing Outlook on the web or using some features across multiple Microsoft 365 services.
• ・Next update by : Tuesday, October 5, 2021, 11:00 AM (2:00 AM UTC)

October 5, 2021 8:42 AM – クイック更新 – Service restored

• We’re gathering and analyzing diagnostic data from the impacted services to determine the cause of the problem.
• This quick update is designed to give the latest information on this issue.

October 5, 2021 8:24 AM

• ・Title : Users may be unable to access Outlook on the web.
• ・User Impact : Users may be unable to access Outlook on the web.
• ・Current status : We’re analyzing system logs to determine the source of impact.
• ・Scope of impact : Impact is specific to users who are served through the affected infrastructure.
• ・Start time : Tuesday, October 5, 2021, 7:42 AM (10/4/2021, 10:42 PM UTC)
• ・Next update by : Tuesday, October 5, 2021, 9:30 AM (12:30 AM UTC)

October 5, 2021 7:54 AM – Service restored

• ・Title : We’re looking into a potential problem.
• ・User Impact : We’re investigating the potential end-user impact.
• We’re investigating a potential issue and checking for impact to your organization.
• We’ll provide an update within 60 minutes.

関連リンク

• ・Outlook on the web にサインインする方法：https://support.microsoft.com/ja-jp/office/763fab4d-0138-4814-b450-37fc286bcb79
• ・OWA（Web 版 Outlook）｜ビジネス メールに使用｜Microsoft Office：https://www.microsoft.com/ja-jp/microsoft-365/outlook/web-email-login-for-outlook
• ・ビジネス向けメール アプリ – Outlook 無料試用版｜Outlook：https://www.microsoft.com/ja-jp/microsoft-365/outlook/outlook-for-business
• ・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/
• ・日本マイクロソフト – Official Home Page：https://www.microsoft.com/ja-jp/

Microsoft 365 Business Standard(最新 1年版)|オンラインコード版| Win/Mac/iPad|各5台

created by Rinker

マイクロソフト

• Amazon
• 楽天市場
• Yahooショッピング

ひと目でわかるOffice 365導入・運用管理編 (マイクロソフト関連書)

created by Rinker

• Amazon
• 楽天市場
• Yahooショッピング