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Title: Users may experience issues when utilizing multiple Microsoft 365 services User impact: Users may experience issues when utilizing multiple Microsoft 365 services. More info: Impact is currently limited to Microsoft Outlook on the web. Previously identified impact included the services and scenarios listed below. We will continue to update this list as our investigation progresses and our understanding of the issue evolves. Exchange Online: - Users can't download email message attachments through any Exchange Online connection method. - Users may be unable to sign in to Outlook on the web. RECOVERED Microsoft Graph: - Users may have experienced failures for scenarios that rely on access to Exchange Online data. Exchange Online: - Service telemetry indicates recovery of core mail flow and search functionality. - Service telemetry indicates recovery of the majority of previously impacted authentication and protocol connectivity scenarios. - Users may have been unable to connect to, or experience degraded functionality, such as failures when attempting to use the search function, within Exchange Online. All connection methods are affected. - Users may have been unable to connect to Exchange Web Services (EWS) - Users may have been unable to use room finder in Outlook calendars. Outlook for iOS and Android: - Users may have experienced delays or failures when sending or receiving email messages via Outlook for iOS and Android. Microsoft 365 Admin Center: - Admins may have experienced issues authenticating into the admin center. Microsoft Purview: - Users can now access the Microsoft Purview portal. - Any policy hits, alerts, or processing activities delayed during the event are expected to appear over the next 24 to 48 hours as recovery validation continues. - Additionally, in Microsoft Purview Communication Compliance, users may have experienced errors when loading Communication Compliance policies and Data Loss Prevention (DLP) policies, and policy creation or evaluation delays. Microsoft Defender XDR: - Users may have experienced intermittent authorization failures across solutions in Defender. Microsoft Teams: - Users may have experienced issues with search and users’ presence may be stale and not update automatically or through manual adjustment. User location adjustment may have failed. - Users may have experienced issues with Microsoft Teams Room (MTR) devices and desktop phones displayed offline in the Teams admin center. - Users may have experienced issues creating, deleting, and editing Teams channels. - Users may have experienced issues with calendar functionality. Microsoft 365 Copilot: - Users' Copilot prompts that required Microsoft 365 grounding, such as email content, may have failed. - Users may have experienced failures for scenarios that rely on access to Exchange Online data. - Users prompts may have failed or they may have experienced degradation when utilizing Cowork. OneDrive for Business and SharePoint Online: - Users may have been unable to load or refresh portions of OneDrive and SharePoint, including account and storage information, search results, Favorites, Followed and Shared With Me content, recent files, lists, and news. - Some users may have also experience delayed or failed file opening, Office policy-label retrieval, OneDrive synchronization, mobile camera upload, and video playback. - Users may have seen partial page failures, missing or stale content, repeated retries, and operation timeouts rather than a complete platform outage. Universal Print: - Users may have been unable to create, upload, or retrieve print jobs. Current status: Our recovery metrics remain positive, with monitoring continuing to indicate that the service is stable and there is a constant reduction in the number of affected users. We’re continuing to validate recovery through targeted remediation actions and service health checks. We’ll maintain targeted monitoring and validation actions to confirm recovery outcomes and identify any remaining impact. Scope of impact: Users attempting to perform any of the outlined impact scenarios may be affected by this event. Start time: Monday, August 31, 2026, at 3:08 PM UTC Preliminary root cause: An issue within a core authentication configuration used by multiple Microsoft 365 services is resulting in impact. Next update by: Thursday, September 3, 2026, at 6:30 AM UTC

Title: Some users may be unable to access SharePoint Online sites configured with Authentication Context User impact: Users may be unable to access SharePoint Online sites configured with Authentication Context. More info: Specifically, users are unable to access SharePoint Online sites configured with Authentication Context through sensitivity labels. Users receive the following error message: "Server Error in '/' Application." As a workaround, users may be able to temporarily access the affected content by first clearing internet browser cookies and navigating to the root site collection before opening the direct link. Users can also open a new browser tab on the same session and access the site. The link may work as well. Current status: The deployment is progressing as expected and users will see relief as it progresses. We expect the release to complete, mitigating impact for all users by the next scheduled update. Scope of impact: Some users attempting to access SharePoint Online sites configured with Authentication Context through sensitivity labels may be impacted. This information may be updated as our investigation continues. Start time: Sunday, August 23, 2026, at 2:38 AM UTC Root cause: A recent SharePoint Online code change intended to update authentication processing resulted in Authentication Context requests not being processed as expected, preventing some users from accessing affected sites. Next update by: Friday, September 4, 2026, at 7:00 PM UTC

We continue to restore batches of messages, message edits, and shared files. Each batch requires careful planning, monitoring, and validation to ensure the affected messages are accurately restored. Custom retention processing remains re-enabled for affected active workspaces. Thank you for bearing with us while we continue to work through this complex and nuanced issue. More updates will come as restoration and validation progress.

Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Algar Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.