Microsoft 365

Title: Some users may be unable to create or publish Microsoft Teams town hall or webinar events that include guest users User impact: Users may be unable to create or publish Microsoft Teams town hall or webinar events that include guest users. Current status: We're reviewing service monitoring telemetry to isolate the source of the issue and establish a fix. Scope of impact: Impact is specific to some users attempting to create or publish Microsoft Teams town hall or webinar events that include guest users. Next update by: Wednesday, July 29, 2026, at 9:30 AM UTC

Title: We're investigating a potential issue with Microsoft Teams User impact: Users are reporting issues joining Microsoft Teams meetings. Current status: We're investigating a potential issue which is preventing users from joining Microsoft Teams meetings and/or is causing disconnections, and we're checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Investigating user reports of Microsoft 365 issues User impact: We don't have detail on impact yet. We're seeing an increase in user reported issues above our alerting threshold. Current status: We are reviewing service telemetry and available information to determine if there is an issue happening and we'll update this message shortly with our latest findings. This communication serves as a preliminary notification about a potential issue affecting your service. We'll provide an update in 30 minutes.

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: 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: 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: Users' SharePoint Online document libraries and list views using multiple group filters aren't displaying full results User impact: Users' SharePoint Online document libraries and list views using multiple group filters aren't displaying full results. More info: Specifically, impacted users report that document libraries and list views using both Primary and Secondary grouping don't display the full or expected results. 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 are intermittently unable to access the Microsoft 365 suite portal User impact: Users are intermittently unable to access the Microsoft 365 suite portal. More info: Access eventually times out with an error message stating, "Bad Request - Header Field Too Long. HTTP Error 400. A request field is too long." Current status: We're investigating a potential issue with intermittent failures when accessing the Microsoft 365 suite portal and checking for impact to your organization. We'll provide an update within 30 minutes.

Title: Users in Japan may experience issues accessing Microsoft services including Microsoft Teams and Microsoft 365 User impact: Users in Japan may have experienced issues accessing Microsoft Teams and Microsoft 365 services. Current status: We've investigated a problem in which users may have experienced issues accessing Microsoft 365 services including Microsoft Teams and confirmed that service is now restored. We'll provide additional information in a closure summary within the "History" section of the "Service health" dashboard shortly.

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: Due to a third-party networking issue, users in Australia may be unable to access Microsoft 365 services User impact: Due to a third-party networking issue, users in Australia may be unable to access Microsoft 365 services. Current status: We've identified through internal monitoring that users in Australia may be unable to access Microsoft 365 services. While we reach out directly to the involved third-party provider for further insight, we're working to manually reroute impacted traffic as a potential route to remediation, which we anticipate may take effect by our next scheduled update. Scope of impact: Users in Australia may be unable to access Microsoft 365 services. This information may be updated as our investigation continues. Root cause: A third-party regional networking issue is occurring, preventing users from accessing Microsoft 365 services as expected. Next update by: Thursday, July 2, 2026, at 3:00 AM UTC