Some users may be unable to use search in multiple Microsoft 365 services from any connection method

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online. All connection methods are affected.

Current status: The supplementary remediation to reroute traffic away from infrastructure which remains impacted following our deployed fix is progressing successfully, and we expect that this effort may be completed by our next scheduled update. We're continuing to monitor service health as this process completes to ensure the impact to users is fully resolved.

Scope of impact: Users attempting to perform searches within Microsoft Teams, SharePoint Online, and Exchange Online may be affected.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Preliminary root cause: A recent update intended to optimize back-end search processes caused a specific .dll file required to regulate searches in Teams, SharePoint Online, and Exchange Online to be removed, resulting in impact.

Next update by: Thursday, December 14, 2023, at 6:30 PM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online. All connection methods are affected.

Current status: Our monitoring continues to indicate remediation for the majority of users whose infrastructure has received our previously mentioned fix. Additionally, our supplementary remediation, which redirects traffic away from residually affected infrastructure to utilize alternative environments, is also progressing successfully. While users will continue to experience relief as the fix propagates, we’re unable to provide a timeline to full resolution at present. We’ll aim to delineate one as soon as it becomes available.

Scope of impact: Users attempting to perform searches within Microsoft Teams, SharePoint Online, and Exchange Online may be affected.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Preliminary root cause: A recent update intended to optimize back-end search processes caused a specific .dll file required to regulate searches in Teams, SharePoint Online, and Exchange Online to be removed, resulting in impact.

Next update by: Thursday, December 14, 2023, at 7:30 AM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online. All connection methods are affected.

Current status: Our monitoring continues to indicate remediation for the majority of users whose infrastructure has received our previously mentioned fix. Additionally, our supplementary remediation, which redirects traffic away from residually affected infrastructure to utilize alternative environments, is also progressing successfully. While users will continue to experience relief as the fix propagates, we’re unable to provide a timeline to full resolution at present. We’ll aim to delineate one as soon as it becomes available.

Scope of impact: Users attempting to perform searches within Microsoft Teams, SharePoint Online, and Exchange Online may be affected.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Preliminary root cause: A recent update intended to optimize back-end search processes caused a specific .dll file required to regulate searches in Teams, SharePoint Online, and Exchange Online to be removed, resulting in impact.

Next update by: Thursday, December 14, 2023, at 7:30 AM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: We’ve initiated the deployment of the fix to most of the affected infrastructure and we’re monitoring its progress to ensure it completes as expected. We’re readying the fix for deployment to the remaining affected infrastructure, which is taking some additional time due to the secure nature of the environment.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Microsoft Teams, SharePoint Online, and Exchange Online is absent, causing the impact to occur.

Next update by: Wednesday, December 13, 2023, at 11:00 PM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: We've completed our initial validation process and confirmed that the fix appears to be working as expected. We're gearing up for a wider deployment of the fix throughout the affected environment, and anticipate this will be in progress by our next scheduled communications update.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Microsoft Teams, SharePoint Online, and Exchange Online is absent, causing the impact to occur.

Next update by: Wednesday, December 13, 2023, at 5:30 PM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: Our testing of the potential fix has been inconclusive in confirming whether impact is being fully remediated by our changes. We're proceeding with a limited further rollout of the mitigation changes across a subset of impacted infrastructure as we continue to monitor the service to validate the effects. We're aiming to have this testing complete by our next scheduled communications update, at which point we'll provide a timeline for full remediation if available.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Microsoft Teams, SharePoint Online, and Exchange Online is absent, causing the impact to occur.

Next update by: Wednesday, December 13, 2023, at 7:00 AM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: We’re continuing to test a potential mitigation to revert the suspected offending change to the service, which is taking some additional time. We’re anticipating that the process should complete by our next scheduled update, at which time we’ll know if additional remediations steps are needed.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Microsoft Teams, SharePoint Online, and Exchange Online is absent, causing the impact to occur.

Next update by: Wednesday, December 13, 2023, at 2:00 AM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: We've identified a change to the service that may have contributed to the impact. We’re testing potential mitigation options on a subset of testing infrastructure to confirm our findings and formulate a remediation plan.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Outlook on the web and the Outlook desktop client is absent, and may be causing impact to occur.

Next update by: Tuesday, December 12, 2023, at 11:00 PM UTC

Title: Some users may be unable to use search in multiple Microsoft 365 services from any connection method

User impact: Users may be unable to use search in multiple Microsoft 365 services from any connection method.

More info: Affected apps include Microsoft Teams, SharePoint Online, and Exchange Online from any connection method.

Current status: We’ve determined that a specific .dll file required to regulate searches in the affected Microsoft 365 services is absent, and may be causing impact to occur. We’re reviewing any recent changes made to the service that may have introduced this problem and determine our next troubleshooting steps.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Thursday, December 7, 2023, at 4:00 AM UTC

Root cause: A specific .dll file required to regulate searches in Outlook on the web and the Outlook desktop client is absent, and may be causing impact to occur.

Next update by: Tuesday, December 12, 2023, at 9:00 PM UTC