Users may be unable to access or use some Microsoft 365 services and features

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here was specific to consumer users. Details regarding Enterprise impact for this event were also provided in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may have experienced impact:
Outlook.com
- Users may have been unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may have experienced mail transport delays.
Microsoft Teams
- Users may have been unable to create or update Virtual Events, including webinars and Town Halls.
- Users may have been unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users may have been unable to create chat, add users, and create or edited meetings.
- Users may have been unable to create or modify new teams and channels.
- Users may have been unable to update presence.
- Users may have been unable to use the search function.
- Users may have not see an updated list of files and links failing to load within the Chat shared tab.
Final status: After a period of extended monitoring, we’ve confirmed through customer reports and service health telemetry that the issue is resolved.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
End time: Tuesday, November 26, 2024, at 11:00 AM UTC
This is the final update for the event.

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current Status: We’re continuing to conduct additional optimizations to further improve service availability, which remains in a healthy state. We're monitoring telemetry closely while this work progresses to ensure service availability is fully restored.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 8:30 PM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current Status: We’re conducting additional optimizations to further improve service availability, which remains healthy. We're closing in on a full mitigation to address any remaining impact and we're closely monitoring telemetry to ensure this trend continues.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 6:30 PM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current Status: We’re continuing our period of monitoring service telemetry, which shows the service availability has remained healthy.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 4:30 PM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current status: From monitoring service telemetry, most users should now experience relief. We’ve completed our optimizations and we're continuing our period of extended monitoring to ensure the availability remains stable.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 1:30 PM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current status: We're still addressing the remaining impact to the Outlook on the web service that is affecting some users. We’ve applied mitigation actions to reduce the mail queues and we’re continuing the extended period of monitoring to ensure stability continues.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 11:30 AM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current status: We're continuing to address lingering impact to the Outlook on the web service that is still affecting some users. In parallel, we're investigating some mail queuing delays that is resulting in mail taking longer than expected to be delivered. Due to the impact of this incident, we will enter a period of extended monitoring prior to declaring this issue resolved.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 9:30 AM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current status: We’ve successfully restored functionality for all previously impacted services and users with the exception of Outlook on the web, which is showing prolonged impact for a small number of users. We’ll continue carefully monitoring the service health and focus on troubleshooting this persisting impact to fully recover for the remaining affected users. We'll provide a new timeline within the next update.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 5:30 AM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading the calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see an updated list of files and links failing to load within the Chat shared tab.
Current status: Our monitoring indicates that a large portion of affected users and services are seeing recovery following our mitigation efforts. We're working on addressing the lingering regions that are still seeing small impact to fully restore service availability, which we still expect to complete by Tuesday, November 26, 2024, at 3:00 AM UTC.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 3:30 AM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see updated list of files and links failing to load within the Chat shared tab.
Current status: The service is continuing to incrementally recover. We're forecasting that impact will be fully remediated by Tuesday, November 26, 2024, at 3:00 AM UTC, though we're closely monitoring our progress and will provide an updated timeline should the estimate change.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 2:30 AM UTC

Title: Users may be unable to access or use some Microsoft 365 services and features
User impact: Users may be unable to access or use some Microsoft 365 services and features.
More info: Impact described here is specific to consumer users. Details regarding Enterprise impact for this event can be found in the Microsoft 365 Admin Center under MO941162.
Users leveraging the following services may experience impact:
Outlook.com
- Users may be unable to access their mailbox using the following impacted connection methods: Outlook on the web, Outlook desktop client, Representational State Transfer (REST), Exchange ActiveSync (EAS)
- Users may experience mail transport delays.
Microsoft Teams
- Users are unable to create or update Virtual Events, including webinars and Town Halls.
- Users may be unable to access or modify their calendar in Microsoft Teams. This would include loading calendar, viewing meetings, creating/updating meetings and joining meetings.
- Users are unable to create chat, add users, and create or edited meetings.
- Users are unable to create or modify new teams and channels.
- Users may be unable to update presence.
- Users may be unable to use the search function.
- Users may not see updated list of files and links failing to load within the Chat shared tab.
Current status: We identified a change that caused an influx of retry requests routed through servers, impacting service availability. To address this, we implemented optimizations to enhance the infrastructure's processing capabilities. These changes have provided incremental relief, and we are closely monitoring the service to ensure stability.
Our team is actively performing follow-up actions and will initiate additional workstreams as needed to fully resolve the issue. Thank you for your patience as we work to restore full functionality.
Start time: Sunday, November 24, 2024, at 1:20 AM UTC
Next update by: Tuesday, November 26, 2024, at 12:30 AM UTC