【トラブルシューティング】SharePoint Online にてクラシック UI のサイトにアクセスすると空白ページが表示される SI（サービス インシデント）が発生【SP287647】【復旧済み】

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Microsoft が提供する Microsoft 365 のサービス正常性（SP287647）にて、クラシック UI の SharePoint Online のサイトにアクセスすると空白のページが表示される SI（サービス インシデント）が発生していることを発表しています。

なお、この問題の影響を受けているユーザーは、該当の SharePoint Online のサイトをモダン UI にてアクセスすることで回避できます。

現在はこの問題を解決する緩和スクリプトの展開が完了し、影響を受けていたユーザーにて問題が発生していないことを確認しているとのことです。

この問題は、最近のアップデート内に含まれていた誤った設定変更により発生していたとのことです。

なお、この問題は影響を受けたインフラストラクチャーを経由してサービスを受けている一部のユーザーに限定されます。

※ 今後、同様の影響を回避するためにサービスのアップデートの手順を見直すとのことです。

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SharePoint Online の SI（サービス インシデント）関連情報一覧

Users see a blank page when using the classic experience to access SharePoint Online sites – SP287647

サービス：SharePoint Online

状態：Service restored

ユーザーへの影響：Users see a blank page when using the classic experience to access SharePoint Online sites.

Microsoft 365 のサービス正常性（SP287647）にて、クラシック UI の SharePoint Online のサイトにアクセスすると空白のページが表示される SI（サービス インシデント）が発生していることを発表しています。

なお、この問題の影響を受けているユーザーは、該当の SharePoint Online のサイトをモダン UI にてアクセスすることで回避できます。

現在はこの問題を解決する緩和スクリプトの展開が完了し、影響を受けていたユーザーにて問題が発生していないことを確認しているとのことです。

この問題は、最近のアップデート内に含まれていた誤った設定変更により発生していたとのことです。

なお、この問題は影響を受けたインフラストラクチャーを経由してサービスを受けている一部のユーザーに限定されます。

※ 今後、同様の影響を回避するためにサービスのアップデートの手順を見直すとのことです。

September 29, 2021 11:55 PM – Service restored

• ・Title : Users were seeing a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users were seeing a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users could have enabled the modern experience in SharePoint Online to access sites.
• ・Final status : Our mitigation script has finished running, and we’ve confirmed with a sample previously affected users that impact is no longer occurring.
• ・Scope of impact : Impact was specific to some users who were served through the affected infrastructure.
• ・Start time : Monday, September 27, 2021, 8:47 AM (9/26/2021, 11:47 PM UTC)
• ・End time : Wednesday, September 29, 2021, 6:30 AM (9/28/2021, 9:30 PM UTC)
• ・Root cause : A recent update contained a configuration change that inadvertently resulted in impact.
• ・Next steps : – We’re reviewing our standard service update procedures to avoid similar impact in the future.
• This is the final update for the event.

September 29, 2021 6:53 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users are seeing a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can enable the modern experience in SharePoint Online to access sites.
• ・Current status : Our mitigation script has finished running, and we’re working with affected users to ensure the issue is no longer occurring.
• ・Scope of impact : Impact is specific to some users who are served through the affected infrastructure.
• ・Start time : Monday, September 27, 2021, 8:47 AM (9/26/2021, 11:47 PM UTC)
• ・Estimated time to resolve : The issue is forecasted to be resolved by Wednesday, September 29, 2021, 4:00 AM (9/28/2021, 7:00 PM UTC)
• ・Root cause : A recent update contained a configuration change that inadvertently resulted in impact.
• ・Next update by : Next update by : Thursday, September 30, 2021, 1:00 AM (9/29/2021, 4:00 PM UTC)

September 29, 2021 2:32 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users are seeing a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can enable the modern experience in SharePoint Online to access sites.
• ・Current status : Our mitigation script is taking longer than expected to deploy, but continues to make progress.
• We estimate that this fix will complete deployment and remediate impact by Wednesday, September 29, 2021, 6:30 AM (9/28/2021, 9:30 PM UTC)
• ・Scope of impact : Impact is specific to some users who are served through the affected infrastructure.
• ・Start time : Monday, September 27, 2021, 8:47 AM (9/26/2021, 11:47 PM UTC)
• ・Estimated time to resolve : The issue is forecasted to be resolved by Wednesday, September 29, 2021, 6:30 AM (9/28/2021, 9:30 PM UTC)
• ・Root cause : A recent update contained a configuration change that inadvertently resulted in impact.
• ・Next update by : Wednesday, September 29, 2021, 8:30 AM (9/28/2021, 11:30 PM UTC)

September 28, 2021 6:55 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users are seeing a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can enable the modern experience in SharePoint Online to access sites.
• ・Current status : Our application of the mitigation script to the affected infrastructure continues to progress, and we’re expecting for the process to have completed and for impact to be resolved by our next scheduled update.
• ・Scope of impact : Impact is specific to some users who are served through the affected infrastructure.
• ・Estimated time to resolve : The issue is forecasted to be resolved by Wednesday, September 29, 2021, 4:00 AM (9/28/2021, 7:00 PM UTC)
• ・Root cause : A recent update contained a configuration change that inadvertently resulted in impact.
• ・Next update by : Wednesday, September 29, 2021, 4:00 AM (9/28/2021, 7:00 PM UTC)

September 28, 2021 2:55 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users are seeing a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can enable the modern experience in SharePoint Online to access sites.
• ・Current status : We’re continuing to apply the mitigation script on the affected infrastructure and expect to have a resolution timeline by the next scheduled update
• ・Scope of impact : Impact is specific to some users who are served through the affected infrastructure.
• ・Root cause : A recent update contained a configuration change that inadvertently resulted in impact.
• ・Next update by : Tuesday, September 28, 2021, 9:00 AM (12:00 AM UTC)

September 27, 2021 7:28 PM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can utilize the modern experience in SharePoint Online to access sites.
• ・Current status : We’ve validated that the fix has successfully mitigated the issue for the portion of users that received it.
• We’re deploying the fix to the remaining affected infrastructure to fully resolve the issue.
• ・Scope of impact: Impact is specific to some users who are served through the affected infrastructure.
• ・Root cause : A recent update contained a configuration change, that inadvertently resulted in impact.
• ・Next update by: Tuesday, September 28, 2021, 4:00 AM (9/27/2021, 7:00 PM UTC)

September 27, 2021 5:15 PM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can utilize the modern experience in SharePoint Online to access sites.
• ・Current status : We’ve identified that a recent update contained a configuration change, that inadvertently resulted in impact to the classic experience view.
• We’ve developed a fix and have begun deploying it to a portion of the affected infrastructure, to ensure it will mitigate the issue as expected.
• ・Scope of impact : Impact is specific to some users who are served through the affected infrastructure.
• ・Root cause : A recent update contained a configuration change, that inadvertently resulted in impact.
• ・Next update by : Monday, September 27, 2021, 7:30 PM (10:30 AM UTC)

September 27, 2021 3:25 PM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can use the modern experience to access SharePoint Online sites.
• ・Current status : We’ve identified a potential deployment that could be resulting in impact.
• We’re in the process of testing a possible mitigation to validate it’s efficacy and confirm the root cause.
• ・Scope of impact : Your organization is affected by this event, and any users attempting to access SharePoint Online sites with the classic experience are impacted.
• ・Next update by : Monday, September 27, 2021, 5:30 PM (8:30 AM UTC)

September 27, 2021 1:25 PM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can use the modern experience to access SharePoint Online sites.
• ・Current status : Our analysis of network trace logs has been inconclusive.
• We’re reviewing recent updates in your affected environment to see if any changes could be contributing to the impact.
• ・Scope of impact : Your organization is affected by this event, and any users attempting to access SharePoint Online sites with the classic experience are impacted.
• ・Next update by : Monday, September 27, 2021, 3:30 PM (6:30 AM UTC)

September 27, 2021 11:30 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can use the modern experience to access SharePoint Online sites.
• ・Current status : We’re analyzing network trace logs provided by your organization to determine the source of the issue.
• ・Scope of impact : Your organization is affected by this event, and any users attempting to access SharePoint Online sites with the classic experience are impacted.
• ・Next update by : Monday, September 27, 2021, 1:30 PM (4:30 AM UTC)

September 27, 2021 11:11 AM – Service restored

• ・Title : Users see a blank page when using the classic experience to access SharePoint Online sites
• ・User Impact : Users see a blank page when using the classic experience to access SharePoint Online sites.
• ・More info : To bypass the impact, users can use the modern experience to access SharePoint Online sites.
• ・Current status : We’re investigating a potential issue and checking for impact to your organization.
• We’ll provide an update within 30 minutes.

関連リンク

• ・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
• ・日本マイクロソフト – Official Home Page：https://www.microsoft.com/ja-jp

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