Title: Users can't open non-Office file lists from modern SharePoint Online sites
User Impact: Users can't open non-Office file lists from modern SharePoint Online sites.
More info: While we're working to investigate and resolve this issue, users can open non-Office file lists from SharePoint Online sites using the classic experience.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.

More info: While we're working to investigate and resolve this issue, users can open non-Office file lists from SharePoint Online sites using the classic experience.
Current status: We're reviewing browser captures and network traces provided by affected users to determine the underlying cause of impact and develop actions to mitigate impact.
Scope of impact: Any user on the modern experience attempting to open non-Office file lists may be impacted by this issue.
Next update by: Thursday, November 4, 2021, at 6:30 PM UTC

More info: While we're working to investigate and resolve this issue, users can open non-Office file lists from SharePoint Online sites using the classic experience.
Current status: Our review of the provided traces indicates that a recent service update contained an error which may be causing impact. We're reviewing the content of the update to confirm the cause and develop a mitigation strategy.
Scope of impact: Any user on the modern experience attempting to open non-Office file lists may be impacted by this issue.
Next update by: Thursday, November 4, 2021, at 8:30 PM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We've confirmed that a recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact. We've developed a fix and are performing internal tests to validate its efficacy.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Thursday, November 4, 2021, at 10:00 PM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We're in the final phases of preparing the fix and expect the deployment process to begin within the next two hours. Once initiated, we estimate it will take 24 hours to complete as the fix is safely deployed through our change management process.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Thursday, November 4, 2021, at 11:30 PM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We've identified errors within the fix that are preventing us from initiating deployment. We're working to investigate and address these errors as quickly as possible.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Friday, November 5, 2021, at 2:30 AM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We’ve successfully addressed the issues that blocked us from deploying the fix. We’ve begun deployment to our internal and a subset of impacted infrastructure to validate that the fix will properly resolve the issue prior to pushing the fix to the remaining environments. We expect our validation process to take approximately three hours.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Friday, November 5, 2021, at 5:30 AM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We've completed our validation process and confirmed that the fix will properly resolve the issue as expected. We've begun deployment to the remaining impacted environments and we will provide a detailed timeline by our next update.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Friday, November 5, 2021, at 5:30 PM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: We're closely monitoring the fix deployment as it reaches the remaining impacted environments. We’ve reached approximately 72% completion for the impacted infrastructure, and many customers will have already experienced remediation as the deployment has saturated in their environment.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Saturday, November 6, 2021, at 2:30 AM UTC

More info: Impacted non-Office file types include, but are not limited to, PDF, JPEG, and PNG.
While we're working to resolve this issue, users can open non-Office files from SharePoint Online lists via the classic experience.
Current status: Our deployment has reached approximately 98 percent completion for the impacted infrastructure, and we’ve confirmed that majority of customers will or are experiencing remediation. We’ll continue our extensive monitoring while deployment reaches the remaining environments.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may be impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
Root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next update by: Saturday, November 6, 2021, at 6:00 PM UTC

Title: Users can't open non-Office files from SharePoint Online lists in the modern experience
User Impact: Users were unable to open non-Office files from SharePoint Online lists in the modern experience.
More info: Impacted non-Office file types included, but were not limited to, PDF, JPEG, and PNG.
While we were working to resolve this issue, users could have opened non-Office files from SharePoint Online lists via the classic experience.
Final status: The deployment has reached full saturation and we’ve validated via internal monitoring that service has been restored.
Scope of impact: Any user hosted on the affected infrastructure using the modern experience attempting to open non-Office files from SharePoint Online lists may have been impacted by this issue.
Start time: Tuesday, November 2, 2021, at 10:40 PM UTC
End time: Saturday, November 6, 2021, at 4:00 PM UTC
Preliminary root cause: A recently deployed change intended to optimize video URL routing within the SharePoint Online service introduced a code problem that has resulted in impact.
Next steps: - We're reviewing our video URL routing updates to determine what caused the code issue and prevent similar incidents in the future.
We'll publish a post-incident report within five business days.

Resolved

Title: Admins can't create classic subsites through the site collection user interface (UI) within SharePoint Online
User Impact: Admins can't create classic subsites through the site collection UI within SharePoint Online.
Current status: We're analyzing Unified Logging Service (ULS) logs to determine the source of the issue.
Scope of impact: All admins with subsite creation permissions that attempt to create classic subsites from the site collection UI within SharePoint Online may experience impact.
Next update by: Thursday, November 4, 2021, at 12:30 AM UTC

Current status: We've determined that an update for optimizing the service is inadvertently preventing admins from creating classic subsites through the site collection UI within SharePoint Online. We're deploying a fix to remediate the impact.
Scope of impact: All admins with subsite creation permissions that attempt to create classic subsites from the site collection UI within SharePoint Online may experience impact.
Start time: Friday, October 22, 2021, at 7:01 AM UTC
Root cause: An update for optimizing the service is inadvertently preventing admins from creating classic subsites through the site collection UI within SharePoint Online.
Next update by: Thursday, November 4, 2021, at 9:00 PM UTC

Current status: Our fix to resolve the issue has initiated deployment, and has currently saturated throughout seven percent of the affected environment. We're continuing to monitor its progress while we establish an estimated timeline to completion.
Scope of impact: All admins with subsite creation permissions that attempt to create classic subsites from the site collection UI within SharePoint Online may experience impact.
Start time: Friday, October 22, 2021, at 7:01 AM UTC
Root cause: An update for optimizing the service is inadvertently preventing admins from creating classic subsites through the site collection UI within SharePoint Online.
Next update by: Friday, November 5, 2021, at 8:30 PM UTC

Current status: Our fix to resolve the issue is saturated across 43 percent of the affected environment. We'll continue to monitor its progress to ensure it doesn't encounter any delays and will aim to provide an estimated time to completion as it becomes feasible.
Scope of impact: All admins with subsite creation permissions that attempt to create classic subsites from the site collection UI within SharePoint Online may experience impact.
Start time: Friday, October 22, 2021, at 7:01 AM UTC
Root cause: An update for optimizing the service is inadvertently preventing admins from creating classic subsites through the site collection UI within SharePoint Online.
Next update by: Monday, November 8, 2021, at 8:30 PM UTC

Title: Admins can't create classic subsites through the site collection user interface (UI) within SharePoint Online
User Impact: Admins couldn't create classic subsites through the site collection UI within SharePoint Online.
Final status: Following our fix deployment, we've internally validated that impact has been remediated.
Scope of impact: All admins with subsite creation permissions that attempted to create classic subsites from the site collection UI within SharePoint Online may have experienced impact.
Start time: Friday, October 22, 2021, at 7:01 AM UTC
End time: Monday, November 8, 2021, at 7:39 PM UTC
Root cause: An update for optimizing the service was inadvertently preventing admins from creating classic subsites through the site collection UI within SharePoint Online.
Next steps: - We're reviewing our update procedures to better understand why it produced impact, and to help identify similar issues during our development and testing cycles.
This is the final update for the event.

Resolved

Title: Users are missing some site navigation features on SharePoint Online sites
User Impact: Users are missing navigation bars and panes on 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.

More info: Due to the intermittent nature of the event, users can temporarily mitigate the problem by refreshing the page.
Current status: We're working to reproduce the issue internally to gather additional diagnostic data for isolating the underlying cause of impact.
Scope of impact: Any user accessing modern SharePoint Online sites may be intermittently impacted.
Next update by: Wednesday, November 3, 2021, at 5:30 PM UTC

More info: Due to the intermittent nature of the event, users can temporarily mitigate the problem by refreshing the page.
Current status: We've successfully reproduced the issue internally and are reviewing recent service updates, in conjunction with browser captures, to determine the root cause of impact.
Scope of impact: Any user accessing modern SharePoint Online sites may be intermittently impacted.
Next update by: Wednesday, November 3, 2021, at 7:30 PM UTC

Title: Users are intermittently missing some site navigation features on modern SharePoint Online sites
User Impact: Users were intermittently missing navigation bars and panes on modern SharePoint Online sites.
More info: Due to the intermittent nature of the event, users could temporarily mitigate the problem by refreshing the page.
Final status: Our review of telemetry has confirmed that a recent service update contained a configuration error which caused sites to incorrectly believe that navigation options should be hidden. We've reverted the change across all environments and confirmed mitigation with affected users.
Scope of impact: Any user accessing modern SharePoint Online sites may have been intermittently impacted.
Start time: Friday, October 29, 2021, at 6:20 AM UTC
End time: Wednesday, November 3, 2021, at 6:53 PM UTC
Root cause: A recent service update contained a configuration error, resulting in impact.
Next steps: - We're reviewing the content of the service update configuration to isolate the specifically impacting code and improve our update validation procedures going forward.
This is the final update for the event.

Resolved

Title: Some users may see text labels show in English when the Preferred Language is set to another language
User Impact: Users may see text labels show in English when the Preferred Language is set to another language in SharePoint Online.
Current status: We're analyzing system logs using our internal reproduction of the issue to determine the root cause.
Scope of impact: Impact is specific to users who are hosted out of the affected infrastructure.
Next update by: Tuesday, November 2, 2021, at 11:30 AM UTC

Current status: We've identified that a recent service update may be resulting in impact to the languages being displayed throughout SharePoint Online. We're analyzing details of recent updates within the environment to help develop a mitigation strategy.
Scope of impact: Impact is specific to users who are hosted out of the affected infrastructure in the Asia Pacific region, with Japan being the most affected.
Next update by: Tuesday, November 2, 2021, at 7:00 PM UTC

Current status: We've identified that impact is occurring outside of the Asia Pacific region. We're continuing to investigate recent updates within the environment to determine the most effective way to resolve the issue
Scope of impact: This issue may impact any user that has their Preferred Language set to a language that is not English.
Root cause: A recent service update may be resulting in impact to the languages being displayed throughout SharePoint Online.
Next update by: Tuesday, November 2, 2021, at 7:00 PM UTC

Title: Some users may see text labels show in English when the Preferred Language is set to another language
User Impact: Users may see text labels and menu options show in English when the Preferred Language is set to another language in SharePoint Online.
Current status: We've identified a recent change that is causing the problem and we're preparing to roll back the deployment to mitigate the issue. We'll provide an updated ETA for resolution as soon as one becomes available.
Scope of impact: This issue may impact any user that has their Preferred Language set to a language that is not English. We've identified that the issue can affect users in any region.
Root cause: A recent service update may be resulting in impact to the languages being displayed throughout SharePoint Online.
Next update by: Tuesday, November 2, 2021, at 11:00 PM UTC

Title: Some users may see text labels show in English when the Preferred Language is set to another language
User Impact: Users may have seen text labels and menu options in English when the Preferred Language was set to another language.
Final status: We've completed our extended monitoring and have confirmed via telemetry and customer reports that the issue is resolved.
Scope of impact: This issue may have impacted any user that had their Preferred Language set to a language that was not English. This issue could have affected users in any region.
Start time: Friday, October 29, 2021, at 9:17 PM UTC
End time: Tuesday, November 2, 2021, at 8:30 PM UTC
Preliminary root cause: A recent service update inadvertently resulted in impact to any non-English languages being displayed throughout SharePoint Online.
Next steps: - We're performing an in-depth analysis of the update to understand the underlying cause and to ensure future issues do not occur.
We'll publish a post-incident report within five business days.

Resolved

Current status: We've completed a roll back for the impacted deployment on Tuesday, November 2, 2021 8:30 PM UTC, and confirmed the issue has been mitigated via internal testing. We're entering a service monitoring period and working to confirm remediation with reporting customers.
Scope of impact: This issue may impact any user that has their Preferred Language set to a language that is not English. We've identified that the issue can affect users in any region.
Start time: Friday, October 29, 2021, at 9:17 PM UTC
Root cause: A recent service update may be resulting in impact to the languages being displayed throughout SharePoint Online.
Next update by: Tuesday, November 3, 2021, at 3:00 AM UTC

Title: Some admins may be unable to access the SharePoint admin center from the left pane in the Classic experience
User Impact: Admins may be unable to access the SharePoint admin center from the left pane in the Classic experience.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.

Current status: We're reviewing user reports and attempting to reproduce the issue in our internal environment to gain a better understanding of root cause and identify our next troubleshooting steps.
Scope of impact: This issue may potentially affect any users attempting to access the SharePoint admin center via the left pane in the classic experience.
Next update by: Thursday, October 14, 2021, at 5:30 PM UTC

More info: Admins can access the SharePoint admin center from the left pane in the modern experience.
Alternatively, admins can access the SharePoint admin center directly through this link, "https://tenantURL-admin/_layouts/15/online/AdminHome.aspx#/settings/NewPortalAsDefault" by substituting their own tenant URL for the "tenantURL" section of the link.
Current status: We successfully reproduced the issue in our internal environment and are analyzing this outcome as well as reviewing recent changes, correlation IDs, and Unified Logging Service (ULS) logs to gain a deeper understanding of root cause and inform our next troubleshooting actions.
Scope of impact: This issue may potentially affect any user who attempts to access the SharePoint admin center via the left pane in the classic experience.
Next update by: Thursday, October 14, 2021, at 8:30 PM UTC

Title: Some admins may be unable to access the SharePoint admin center from the left pane in the classic experience
User Impact: Admins may have been unable to access the SharePoint admin center from the left pane in the classic experience.
More info: Admins could have accessed the SharePoint admin center from the left pane in the modern experience.
Alternatively, admins could have accessed the SharePoint admin center directly through this link, "https://tenantURL-admin/_layouts/15/online/AdminHome.aspx#/settings/NewPortalAsDefault" by substituting their own tenant URL for the "tenantURL" section of the link.
Final status: We've discovered that impact was specific to admins whose organizations have opted to receive Private Preview features. We've confirmed with affected admins that disabling the offending code portion has mitigated the issue.
Scope of impact: This issue may have affected admins whose organizations have opted to receive Private Preview features and was specifically felt when admins attempted to access the SharePoint admin center via the left pane in the classic experience.
Start time: Thursday, October 14, 2021, at 3:00 AM UTC
End time: Thursday, October 14, 2021, at 5:20 PM UTC
Root cause: A recent change introduced a code issue that resulted in impact.
Next steps: - We're reviewing our SharePoint admin center update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event.

Resolved

More info: Admins can access the SharePoint admin center from the left pane in the modern experience.
Alternatively, admins can access the SharePoint admin center directly through this link, "https://tenantURL-admin/_layouts/15/online/AdminHome.aspx#/settings/NewPortalAsDefault" by substituting their own tenant URL for the "tenantURL" section of the link.
Current status: We've identified a recent change meant to enhance the service may have inadvertently resulted in impact. We've disabled the offending portion of code and initial tests prove this was effective in mitigating impact. We're reaching out to some affected users to confirm that service is restored.
Scope of impact: This issue may potentially affect any user who attempts to access the SharePoint admin center via the left pane in the classic experience.
Root cause: A recent change meant to enhance the service may have inadvertently resulted in impact.
Next update by: Thursday, October 14, 2021, at 10:30 PM UTC

Title: Users can't see digital signatures within .pdf files when using the SharePoint Online previewer
User Impact: Users can't see digital signatures within .pdf files when using the SharePoint Online previewer.
More info: Impact is specific to the digital signatures within the previewer, the rest of the content is visible. Users can see the signatures after downloading the file.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.

More info: Impact is specific to the digital signatures within the previewer, the rest of the content is visible. Users can see the signatures after downloading the file.
Current status: We're reviewing the SharePoint Online .pdf file previewing code to assist in the root cause investigation.
Scope of impact: Any user attempting to view digital signatures within .pdf files using the SharePoint Online previewer is impacted.
Next update by: Thursday, October 7, 2021, at 5:00 PM UTC

More info: Impact is specific to the digital signatures within the previewer; the rest of the content is visible. Users can see the signatures after downloading the file. Users can also view the digital signatures by using the "Open in Browser" feature.
Current status: We're continuing our review of the previewer code to isolate the underlying cause and develop mitigation actions.
Scope of impact: Any user attempting to view digital signatures within .pdf files using the SharePoint Online previewer is impacted.
Next update by: Thursday, October 7, 2021, at 7:00 PM UTC

More info: Impact is specific to the digital signatures within the previewer; the rest of the content is visible. Users can see the signatures after downloading the file. Users can also view the digital signatures by using the "Open in Browser" feature.
Current status: Our investigation has confirmed that a recent Javascript update contained a configuration error, resulting in impact. We're in the process of developing a fix and expect to have a mitigation timeline by the next scheduled update.
Scope of impact: Any user attempting to view digital signatures within .pdf files using the SharePoint Online previewer is impacted.
Start time: Tuesday, September 14, 2021, at 1:00 PM UTC
Root cause: A recent Javascript update contained a configuration issue, resulting in impact.
Next update by: Friday, October 8, 2021, at 2:30 AM UTC

More info: Impact is specific to the digital signatures within the previewer; the rest of the content is visible. Users can see the signatures after downloading the file. Users can also view the digital signatures by using the "Open in Browser" feature.
Current status: We've developed and deployed the fix. We're monitoring its progress and expect service will be restored by Tuesday, October 12, 2021.
Scope of impact: Any user attempting to view digital signatures within .pdf files using the SharePoint Online previewer is impacted.
Start time: Tuesday, September 14, 2021, at 1:00 PM UTC
Estimated time to resolve: We expect the fix will finish deploying and service will be restored by Tuesday, October 12, 2021.
Root cause: A recent Javascript update contained a configuration issue, resulting in impact.
Next update by: Friday, October 8, 2021, at 10:30 PM UTC

More info: Impact is specific to the digital signatures within the previewer; the rest of the content is visible. Users can see the signatures after downloading the file. Users can also view the digital signatures by using the "Open in Browser" feature.
Current status: We've confirmed that deployment of the fix has reached 50 percent of the affected environment, and continue to expect deployment to complete to resolve this issue ​by Tuesday, October 12, 2021
Scope of impact: Any user attempting to view digital signatures within .pdf files using the SharePoint Online previewer is impacted.
Start time: Tuesday, September 14, 2021, at 1:00 PM UTC
Estimated time to resolve: We expect the fix will finish deploying and service will be restored by Tuesday, October 12, 2021.
Root cause: A recent Javascript update contained a configuration issue, resulting in impact.
Next update by: Tuesday, October 12, 2021, at 8:00 PM UTC

Title: Users can't see digital signatures within .pdf files when using the SharePoint Online previewer
User Impact: Users couldn't see digital signatures within .pdf files when using the SharePoint Online previewer.
More info: Impact was specific to the digital signatures within the previewer; the rest of the content was visible. Users could have seen the signatures after downloading the file or by using the "Open in Browser" feature.
Final status: We've confirmed that the fix has completed deployment and verified via telemetry and customer report that this has mitigated impact.
Scope of impact: Any user who attempted to view digital signatures within .pdf files using the SharePoint Online previewer experienced impact.
Start time: Tuesday, September 14, 2021, at 1:00 PM UTC
End time: Monday, October 11, 2021, at 10:00 PM UTC
Root cause: A recent JavaScript update contained a configuration issue which resulted in impact.
Next steps: - We're reviewing our JavaScript update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event.

Resolved

Title: Some users may be unable to create .docx files within the SharePoint Online service
User Impact: Users may be unable to create .docx files within the SharePoint Online service.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.

User impact: Users may be unable to create office documents utilising the powerautomate tool within the SharePoint Online service.
More info: This issue occurs when the 'allow chunking' option is enabled whilst attempting to create with content.
As a workaround, users are able to circumvent the issue by disabling the 'allow chunking' option and then splitting the "create file" and "update file" into two steps.
Current status: We're attempting to reproduce the issue in our internal testing environment, to help identify the root cause and develop a mitigation plan.
Scope of impact: Impact is specific to a subset of users who are served through the affected infrastructure.
Next update by: Thursday, September 30, 2021, at 7:00 PM UTC

More info: This issue occurs when the 'Allow Chunking' option is enabled.
As a workaround, users can circumvent the issue by disabling the 'Allow Chunking' option and then splitting the "create file" and "update file" into two steps.
Current status: We've successfully reproduced the issue internally and our investigation indicates impact was caused by a recent API update which changed the way file storage is accessed. We're working to revert the change in a test environment to confirm this is the root cause prior to expanding to all impacted infrastructure.
Scope of impact: Impact is specific to users creating documents with "Allow Chunking' enabled.
Next update by: Thursday, September 30, 2021, at 10:30 PM UTC

Title: Users can’t create Microsoft Office files using the Power Automate tool within SharePoint Online
User Impact: Users were unable to create Microsoft Office files using the Power Automate tool within SharePoint Online.
More info: This issue occurred when the 'Allow Chunking' option was enabled.
As a workaround, users could have circumvented the issue by disabling the 'Allow Chunking' option and then splitting the "create file" and "update file" into two steps.
Final status: We've reverted the change for all impacted infrastructure after successfully testing it in our internal environments and confirmed with affected users that impact has been mitigated.
Scope of impact: Impact was specific to users who created Microsoft Office files with "Allow Chunking' enabled.
Start time: Friday, September 24, 2021, at 9:26 AM UTC
End time: Thursday, September 30, 2021, at 8:33 PM UTC
Root cause: A recent API update which changed the way file storage is accessed resulted in impact.
Next steps: - We're reviewing our API update procedures to find ways to prevent this problem from happening again.
This is the final update for the event.

Resolved

Title: Some users are unable to automate Power Automate items in their document library within SharePoint Online
User Impact: Users are unable to automate Power Automate items in their document library within SharePoint Online.
Current status: We're reviewing the details provided in the support case and our internal reproduction of the issue to determine the root cause of impact.
Scope of impact: This issue impacts any user automating items in Power Automate.
Next update by: Thursday, September 2, 2021, at 7:30 PM UTC

Final status: We determined that impact was caused by a recent service update which contained a change that altered the way category names are defined. We've reverted the change and confirmed mitigation with affected users.
Scope of impact: This issue may have impacted any user.
Start time: Thursday, September 2, 2021, at 3:02 AM UTC
End time: Thursday, September 2, 2021, at 5:30 PM UTC
Root cause: A recent service update intended to change the method category names are defined contained a code issue that inadvertently caused impact.
Next steps: - We're reviewing the category name definition code changes to isolate the impacting change to better identify similar issues within the validation process in the future.
This is the final update for the event.

Title: Users can't modify the layout of SharePoint Online modern sites that have web parts
User Impact: Users are unable to modify the layout of SharePoint Online modern sites that have web parts.
More info: When users attempt to edit the desired section, they receive an error stating "No settings to change for this web part."
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.
Scope of impact: Impact may occur for any user attempting to modify the layout of SharePoint Online modern sites that have web parts.

More info: When users attempt to edit the desired section, they receive an error stating "No settings to change for this web part."
Current status: We're investigating available diagnostic data, such as any recent changes that may have contributed to this impact, in order to isolate the source of this issue and identify troubleshooting actions.
Scope of impact: Impact may occur for any user attempting to modify the layout of SharePoint Online modern sites that have web parts.
Next update by: Friday, August 20, 2021, at 5:30 PM UTC

More info: When users attempt to edit the desired section, they receive an error stating "No settings to change for this web part."
Current status: We've identified a recent change that may have resulted in the impact, and we're disabling this flight in our test environment to confirm our findings and determine next steps.
Scope of impact: Impact may occur for any user attempting to modify the layout of SharePoint Online modern sites that have web parts.
Next update by: Friday, August 20, 2021, at 7:30 PM UTC

More info: When users attempted to edit the desired section, they received an error stating "No settings to change for this web part."
Final status: We've identified that a recent change intended to update the Canvas Zone SharePoint Online library unexpectedly resulted in impact. We've disabled this offending change and after monitoring the service and verifying with affected users, we've ensured that this action has successfully resolved the problem.
Scope of impact: Impact may have occurred for any user attempting to modify the layout of SharePoint Online modern sites that have web parts.
Start time: Wednesday, August 18, 2021, at 11:00 PM UTC
End time: Friday, August 20, 2021, at 5:56 PM UTC
Root cause: A recent change intended to update the Canvas Zone SharePoint Online library unexpectedly resulted in impact.
Next steps: - We're investigating why the recent change intended to update the Canvas Zone SharePoint Online library resulted in impact to prevent this problem from happening again in the future. - We’re also assessing why the problem wasn’t caught prior to deploying the update so that we can improve our update testing procedures.
This is the final update for the event.

Title: Some users can't run 2013 workflows in SharePoint Online
User Impact: Users are unable to run 2013 workflows in SharePoint Online.
Current status: We’re reviewing details provided by affected users to determine the next steps needed to resolve this issue.
Scope of impact: Users who are served through the affected infrastructure in North America and Canada may experience impact.
Next update by: Thursday, August 19, 2021, at 4:00 PM UTC

Current status: We’re reviewing back-end service logs to better understand the issue and determine our next troubleshooting steps.
Scope of impact: Users who are served through the affected infrastructure in North America and Canada may experience impact.
Next update by: Thursday, August 19, 2021, at 6:00 PM UTC

Current status: We've noticed some errors during our review, leading us to suspect that a networking issue may be the cause. We're reviewing the API version of the service, as well as performing connectivity tests to isolate the cause of impact and determine our next steps.
Scope of impact: Users who are served through the affected infrastructure in North America and Canada may experience impact.
Next update by: Thursday, August 19, 2021, at 8:00 PM UTC

Final status: We've completed restarting the infrastructure, and after reviewing workflow telemetry and reaching out to affected users, we’ve confirmed that impact has been fully remediated.
Scope of impact: Users who were served through the affected infrastructure in North America and Canada may have experienced impact.
Start time: Thursday, August 19, 2021, at 6:50 AM UTC
End time: Thursday, August 19, 2021, at 7:00 PM UTC
Root cause: A portion of infrastructure that supports workflow calls unexpectedly stopped performing within acceptable standards, causing impact.
Next steps: - We're reviewing this portion of infrastructure to understand why it unexpectedly stopped performing within acceptable standards to help prevent similar impact from reoccurring in the future. - We're reviewing our monitoring services to look for ways to reduce detection time and more quickly restore service.
This is the final update for the event.

Current status: We've confirmed that a portion of infrastructure that supports workflow calls unexpectedly stopped performing within acceptable standards, causing impact. We've re-routed traffic to an alternate infrastructure and are restarting it, after which we'll review telemetry and reach out to affected users to confirm impact remediation.
Scope of impact: Users who are served through the affected infrastructure in North America and Canada may experience impact.
Start time: Thursday, August 19, 2021, at 6:50 AM UTC
Root cause: A portion of infrastructure that supports workflow calls unexpectedly stopped performing within acceptable standards, causing impact.
Next update by: Thursday, August 19, 2021, at 9:30 PM UTC