Microsoft 365

Title: Some users may be unable to join Microsoft Teams meetings and see sign-in errors User impact: Users may be unable to join Microsoft Teams meetings and see sign-in errors. More info: Affected users see a sign-in prompt when attempting to join a meeting but clicking "sign-in" on the prompt has no effect. Users can sign-out and sign back in as a temporary mitigation. 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

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 impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Some users may be unable to join Microsoft Teams meetings and see sign-in errors User impact: Users may be unable to join Microsoft Teams meetings and see sign-in errors. More info: Affected users see a sign-in prompt when attempting to join a meeting but clicking "sign-in" on the prompt has no effect. Users can sign-out and sign back in as a temporary mitigation. 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 may be unable to access multiple Microsoft 365 services using Global Secure Access (GSA) User impact: Users may be unable to access multiple Microsoft 365 services using GSA. More info: Impacted services may include, but aren't limited to: - Outlook - Outlook on the web - OneDrive - SharePoint Online - Microsoft Teams - Windows 365 Cloud PCs Current status: We're reviewing service monitoring telemetry to isolate the source of the issue and establish a fix. Scope of impact: Some users in Germany and the United Kingdom attempting to access Microsoft 365 services listed in the More info section using GSA may be impacted. Next update by: Tuesday, October 13, 2026, at 11:30 AM UTC

Title: Some admins may be unable to access the Exchange admin center (EAC) User impact: Admins may be unable to access the EAC. More info: When attempting to access the Exchange admin center, affected admins may encounter an “Internal Server Error” message. Current status: When attempting to access the Exchange admin center, affected admins may encounter an “Internal Server Error” message. Scope of impact: Impact may be specific to any admin attempting to access the EAC. This information may be updated as our investigation continues. Next update by: Monday, October 12, 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 ARM 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 12, 2026, at 11:30 AM UTC

Title: Users can't view or modify Nintex forms in SharePoint Online and receive an error User impact: Users can't view or modify Nintex forms in SharePoint Online and receive an error. Current status: We're investigating a potential issue with SharePoint Online and checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Some users' email messages from on-premises Exchange servers to Exchange Online may intermittently fail User impact: Users' email messages from on-premises Exchange servers to Exchange Online may intermittently fail. 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: Some admins can't access the Microsoft 365 admin portal User impact: Admins may be unable to access the Microsoft 365 admin portal. Current status: We're investigating a potential issue impacting admin access to the Microsoft 365 admin portal in certain regions and we're checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Some users may be unable to search using the search box in SharePoint Online User impact: Users may be unable to search using the search box in SharePoint Online. Current status: We're analyzing support provided information to determine our next troubleshooting steps. Scope of impact: Some users attempting to search in SharePoint Online are impacted. This information may be updated as our investigation continues. Next update by: Monday, October 5, 2026, at 4:00 PM UTC

Title: Potential issues accessing Microsoft OneDrive content User impact: Users may be unable to access OneDrive content and may notice delays or navigation errors. Current Status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within one hour.

Title: Potential issues accessing SharePoint Online sites User impact: Users may be unable to access SharePoint Online sites and may notice delays or navigation errors. Current Status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within one hour.

Title: Users may not be able to access Microsoft Viva Glint User impact: Users may not be able to access Viva Glint. Current status: We're investigating a potential issue with Viva Glint and checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Some users' email with DocuSign URLs may not be delivered and may be quarantined due to URL reputation User impact: Users' email with DocuSign URLs may not be delivered and may be quarantined due to URL reputation. 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: Some users conferenced into a Microsoft Teams E911 call may not be automatically muted or able to mute themselves User impact: Users conferenced into a Microsoft Teams E911 call may not be automatically muted or able to mute themselves. 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 can't reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online User impact: Users can't reply or reply-all to email messages sent to Microsoft 365 groups 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: Some users’ email messages may not be quarantined and fail to be stored in the quarantine folder User impact: Users’ email messages may not be quarantined and might fail to be stored in the quarantine folder. More info: Some legitimate email messages are not being delivered to the intended recipient and cannot be released through the normal Microsoft Defender quarantine workflow. Current status: We're reviewing support case details to determine our next troubleshooting steps. Scope of impact: This issue may impact users attempting to have email messages quarantined in Exchange Online. This section may be updated as the investigation progresses. Next update by: Thursday, September 24, 2026, at 1:30 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 be unable to search mailbox or Address Book content in Exchange Online across connection methods User impact: Users may be unable to search mailbox or Address Book content in Exchange Online across connection methods. Current status: We've received support cases indicating that some users can't search mailbox or Address Book content in Exchange Online across connection methods. We're reviewing our service telemetry to isolate the root cause of impact and develop a remediation strategy. Scope of impact: Some users attempting to search mailbox or Address Book content in Exchange Online across connection methods may be affected. This section may be updated as our investigation progresses. Next update by: Thursday, September 24, 2026, at 1:00 AM UTC

Title: Some users may experience unexpected application crashes for Microsoft Teams on macOS devices User impact: Users may experience unexpected application crashes for Microsoft Teams on macOS devices. More info: Impact is specific to users who have updated to their macOS devices to version 27.2 beta. Current status: We've identified a significant increase in Microsoft Teams application crashes affecting macOS devices on version 27.2 beta and are investigating the underlying cause. We're continuing our analysis of crash telemetry and related diagnostic data to determine the source of impact and develop a remediation plan. Scope of impact: Impact is specific to users experiencing unexpected application crashes for Microsoft Teams on version 27.2 beta macOS devices. Next update by: Friday, September 18, 2026, at 3:30 PM UTC

Title: We're looking into a potential problem impacting Microsoft Teams User impact: We're looking into a potential problem impacting 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 may be unable to load SharePoint Online sites or pages and receive an error message User impact: Users may be unable to load SharePoint Online sites or pages and receive an error message. More info: The error message states: "Sorry, something went wrong: Thread was being aborted." Current status: We're investigating a potential issue with SharePoint Online and checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Some users in the United States may be unable to access Microsoft 365 services User impact: Users in the United States may be unable to access Microsoft 365 services. Current status: We're reviewing service monitoring telemetry and associated reports to isolate the root cause, in order to develop a remediation plan. Scope of impact: Impact is specific to users in the United States attempting to access Microsoft 365 services. This information may be updated as our investigation continues. Next update by: Wednesday, September 16, 2026, at 3:30 PM UTC

Title: Some users may intermittently be unable to launch Microsoft Teams from the web or desktop clients User impact: Users may intermittently be unable to launch Microsoft Teams from the web or desktop clients. Current status: We're investigating a potential issue in which some users may intermittently be unable to launch Microsoft Teams from the web or desktop clients and checking for impact to your organization. We'll provide an update within 30 minutes.