Title: Users may be unable to connect to multiple Microsoft 365 services User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We’re investigating an issue impacting multiple Microsoft 365 services and we've determined the affected infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors. We're restarting and repairing impacted portions of this infrastructure to restore capacity, and reviewing an unexpected increase in a specific type of service traffic to determine whether it's contributing to the elevated load. In parallel, we're evaluating options to redirect traffic to alternate infrastructure to expedite relief. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 8:30 PM UTC
Title: Potential issues accessing mailboxes via one or more connection methods User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods. Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 60 minutes.
Title: Users are unable to view reporting metrics for Amplify Campaigns in SharePoint Online User impact: Users are unable to view reporting metrics for Amplify Campaigns in SharePoint Online. More info: Users can open Amplify Campaigns, but reporting metrics may fail to load. Affected users may receive the following error message: "Couldn't load data. Something went wrong and we couldn't get the data to display." Current status: We're reviewing support provided information to determine our next troubleshooting steps. Scope of impact: Your organization is affected by this event, and users attempting to view reporting metrics for Amplify Campaigns in SharePoint Online are impacted. Next update by: Wednesday, November 11, 2026, at 2:00 PM UTC
Title: Users may be unable to connect to multiple Microsoft 365 services User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We’re investigating an issue impacting multiple Microsoft 365 services and we've determined the affected infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors. We're restarting and repairing impacted portions of this infrastructure to restore capacity, and reviewing an unexpected increase in a specific type of service traffic to determine whether it's contributing to the elevated load. In parallel, we're evaluating options to redirect traffic to alternate infrastructure to expedite relief. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 8:30 PM UTC
Title: Potential issues accessing mailboxes via one or more connection methods User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods. Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 60 minutes.
Title: Some users may encounter errors when submitting queries in Microsoft 365 Copilot Chat User impact: Users may encounter errors when submitting queries in Copilot Chat. More info: Affected users may see errors such as “Something went wrong” or “I couldn’t help with that” when submitting queries. Current status: We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps. Scope of impact: Impact is specific to some users attempting to submit queries in Copilot Chat. Next update by: Wednesday, November 11, 2026, at 5:00 PM UTC
Title: Potential issues accessing mailboxes via one or more connection methods User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods. Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 60 minutes.
Title: Some users may be intermittently unable to send email messages to Outlook.com, Hotmail.com, or Live.com email addresses User impact: Users may be intermittently unable to send email messages to Outlook.com, Hotmail.com, or Live.com email addresses. More info: Users may receive a Non-Delivery Report (NDR) reporting 550 5.7.1 or 550 5.7.23 due to Service Provider Foundation (SPF) violation. Current status: We've received reports indicating that some users may be unable to send email messages to Outlook.com, Hotmail.com or Live.com email addresses. We're requesting that affected users reach out to their support representatives and provide fresh Network Message IDs, fresh logs, and examples of impact users are facing in .eml format. These logs will aid in the root cause investigation into why impact persists, so we can identify a remediation plan. Scope of impact: Some users may be intermittently unable to send email messages to Outlook, Hotmail, and Live email accounts. Next update by: Wednesday, November 11, 2026, at 7:00 AM UTC
Title: Users are unable to view reporting metrics for Amplify Campaigns in SharePoint Online User impact: Users are unable to view reporting metrics for Amplify Campaigns in SharePoint Online. More info: Users can open Amplify Campaigns, but reporting metrics may fail to load. Affected users may receive the following error message: "Couldn't load data. Something went wrong and we couldn't get the data to display." Current status: We're reviewing support provided information to determine our next troubleshooting steps. Scope of impact: Your organization is affected by this event, and users attempting to view reporting metrics for Amplify Campaigns in SharePoint Online are impacted. Next update by: Wednesday, November 11, 2026, at 2:00 PM UTC
Title: We're looking into a potential problem impacting Microsoft 365 Copilot Chat User impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue with Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 30 minutes.
Title: External users’ replies to encrypted email messages may not be delivered in Exchange Online User impact: External users’ replies to encrypted email messages may not be delivered in Exchange Online. Current status: We're investigating a potential issue with Exchange Online and checking for impact to your organization. We'll provide an update within 30 minutes.
Title: Admins are unable to complete cross-tenant Microsoft OneDrive migrations User impact: Admins are unable to complete cross-tenant OneDrive migrations. More info: Admins may see some migration jobs remain in the Scheduled/Queued state. Current status: We're analyzing support provided information to determine our next troubleshooting steps. Scope of impact: Your organization is affected by this event, and admins attempting to complete cross-tenant OneDrive migrations are impacted. Next update by: Thursday, October 29, 2026, at 12:30 PM UTC
Title: Some users may experience intermittent errors or failures when accessing Exchange Online through REST APIs User impact: Users may experience intermittent errors or failures when accessing Exchange Online through REST APIs. Current status: We're investigating an issue in which users may experience intermittent errors or failures when accessing Exchange Online through REST APIs. We're reviewing service telemetry to determine the underlying cause and identify the most effective remediation action. We'll provide an update within 30 minutes.
Title: SIP devices can't make or receive calls User impact: Users may be unable to make or receive call using SIP devices. More info: Once a SIP device attempts to perform its next synchronization, the device will disconnect. Users will be unable to log back into those devices and therefore can't make or receive calls using those SIP devices. Calling functionality using the Microsoft Teams web and desktop clients, or Teams Phone Devices are not impacted. Current status: We’ve identified the underlying root cause and we are working on developing a fix. Scope of impact: This issue could impact any SIP device. Next update: Wednesday, October 21, 2026 at 11:00 PM UTC
Title: SIP devices can't make or receive calls User impact: Users may be unable to make or receive call using SIP devices. More info: Once a SIP device attempts to perform its next synchronization, the device will disconnect. Users will be unable to log back into those devices and therefore can't make or receive calls using those SIP devices. Calling functionality using the Microsoft Teams web and desktop clients, or Teams Phone Devices are not impacted. Current status: We’ve identified the underlying root cause and we are working on developing a fix. Scope of impact: This issue could impact any SIP device. Next update: Wednesday, October 21, 2026 at 11:00 PM UTC
Title: Users may be unable to perform migrations User impact: Users may be unable to perform migrations More info: Migrations that use Migration Manager Platform (MMP) API will be impacted. These include migrations initiated from Microsoft 365 Admin Center and third-party migrations. Migrations using SPMT (Sharepoint Migration Tool) will not be impacted. Current status: After reviewing telemetry data, we’ve identified the source of the issue and have narrowed our investigation to the specific conditions contributing to the impact. We’re now assessing the most effective mitigation options and determining the actions required to restore normal service as quickly and safely as possible. Next update: Wednesday, October 21, 2026 at 1:00 PM UTC
Title: Some users may be unable to send messages in Microsoft 365 Copilot chat User impact: Users may be unable to send messages in Copilot chat. More info: Impacted experiences include Copilot chat through the Copilot web app, the Copilot app on Windows, Microsoft Teams, Outlook, and Microsoft 365 desktop apps. Current status: We’ve identified that a section of the Copilot service infrastructure that facilitates access is performing below acceptable thresholds. We’ve identified a service change that may be contributing to the impact and have reverted the change in an attempt to mitigate the issue. In parallel, we’re reviewing service telemetry and error data to confirm the root cause. Scope of impact: Some users attempting to send messages in Copilot chat through the Copilot web app, the Copilot app on Windows, Microsoft Teams, Outlook, and Microsoft 365 desktop apps are impacted. This information may be updated as our investigation continues. Next update by: Monday, October 19, 2026, at 11:30 AM UTC
Title: Some users may be unable to access or protect content using Azure Rights Management (ARM) across Microsoft 365 services User impact: Users may be unable to access or protect content using ARM across Microsoft 365 services. More info: Impact may prevent users from encrypting or decrypting protected content, including files and email messages, across Microsoft 365 services that rely on ARM. Current status: We’ve identified that some service components responsible for processing Azure Rights Management requests are in an unhealthy state. We’re attempting to restart the affected components to mitigate impact. We’re seeing early signs of service recovery and are investigating the root cause while evaluating whether additional mitigation actions are required. Scope of impact: Some users attempting to encrypt or decrypt content using Microsoft 365 services that rely on ARM may be impacted. Next update by: Monday, October 19, 2026, at 11:00 AM UTC
Title: Some users are unable to join town hall meetings in Microsoft Teams and are redirected to a registration page User impact: Users are unable to join town hall meetings in Microsoft Teams and are redirected to a registration page. More info: This occurs when organizers create and publish town halls with registration disabled. Additionally, some users may find the Join option unavailable or unresponsive. Current status: We’ve confirmed that affected town halls are successfully created and published with registration disabled as intended. However, the attendee experience isn’t honoring this setting and users continue to be directed to a registration page. We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps. Scope of impact: Your organization is affected by this event, and some users attempting to join town hall meetings in Microsoft Teams with registration disabled are impacted. Next update by: Monday, October 19, 2026, at 10:00 AM UTC
Title: Some users' calls are failing in Microsoft Teams User impact: Users' calls are failing in Microsoft Teams. Current status: We're investigating a potential issue with Microsoft Teams and checking for impact to your organization. We'll provide an update within 30 minutes.
Title: Users' mailbox syncing fails with an error in Exchange Online User impact: Users' mailbox syncing fails with an error in Exchange Online. Current status: We're investigating a potential issue with mailbox sync status in Exchange Online and checking for impact to your organization. We'll provide an update within 30 minutes.
Title: Some users are unable to see model selection options in Microsoft 365 Copilot chat User impact: Users are unable to see model selection options in Copilot chat. More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat. Current status: We've received reports indicating an issue with model selection options in Copilot Chat. We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps. Scope of impact: Your organization is affected by this event, and some users attempting to access GPT, Claude, or other model selection options in Copilot chat are impacted. This information may be updated as our investigation continues. Next update by: Wednesday, October 14, 2026, at 9:00 AM UTC