Microsoft Outlook Outage on 6th February EX512238

Microsoft Outlook suffered an outage for several hours last night, disrupting North America and worldwide email services.

Proactive and Early Outage Detection

Exoprise sensors first detected and confirmed the outage at 11.03 pm in our London region last night. There was a second outage at 2 am.

Our Email sensors test mail flow and mail queues for Microsoft Exchange Server, Exchange Online, Office 365, SPAM providers, OWA, and more. These synthetic sensors continuously gather mail flow statistics and performance metrics from any location to detect network bottlenecks in your mail delivery infrastructure.

Our Message Transfer Agent or MTA, was also measuring all inbound, outbound, and transport mail queue performance by sending small messages to the Exoprise auto-responder. To plan for extra capacity, you can easily compare your mailbox performance with crowd-source analytics.

Status Updates on Microsoft Outage EX512238

February 7, 2023 9:57 AM

Title: Unable to send, receive, or search email through Exchange Online User impact: Users may be unable to send, receive, or search email within Exchange Online. More info: Exchange functionality such as Calendar APIs consumed by other services such as Microsoft Teams are also affected. SharePoint Online search queries are also affected.

Users may receive the following error message when running search queries “Error: Sorry something went wrong” when utilizing Knowledge Management (KM) portal on Dlnet”.

Current status: We can see from telemetry that the majority of impact has been remediated, with service availability at 99.9%. We’re continuing to monitor the environment and perform targeted restarts on back-end mailbox components which show residual impact to ensure recovery for all users.

Scope of impact: This issue can affect any user accessing Exchange Online from any region. Start time: Monday, February 6, 2023, 10:40 PM (2/7/2023, 3:40 AM UTC) Root cause: A subset of infrastructure, responsible for routing traffic, unexpectedly stopped responding to traffic requests. Next update by: Tuesday, February 7, 2023, 12:00 PM (5:00 PM UTC)

February 6, 2023 11:06 PM

Title: We’re looking into a potential problem. User Impact: We’re investigating the potential end-user impact. Current status: We’re investigating a potential issue and checking for impact to your organization. We’ll provide an update within 60 minutes.

Comment from Microsoft on its service page

“We’re investigating access and service issues for Outlook. More information will be provided in the admin center under EX512238 as it becomes available.”

February 6, 2023 11:48 PM

Title: Unable to send, receive, or search email through Exchange Online User Impact: Users may be unable to send, receive, or search email within Exchange Online. Current status: We’ve identified a recent change that may be causing issues with send, receive, or email search within Exchange. We’re working to identify the next steps to restore access to the service. Scope of impact: Users primarily located in the North American region attempting to access Exchange may be unable to send, receive, or search email. Start time: Monday, February 6, 2023, 11:04 PM (2/7/2023, 4:04 AM UTC) Next update by: Tuesday, February 7, 2023, 1:00 AM (6:00 AM UTC)

February 7, 2023 7:27 AM · Quick update

Current status: Service telemetry and customer reports indicate that the service continues to gradually recover. We’re continuing with the targeted restarts to provide further relief. This quick update is designed to give the latest information on this issue.

Preliminary Root Cause for EX512238

We’ve identified a recent change that may be causing issues with send, receive, or email search within Exchange. We’re working to identify the next steps to restore access to the service.

— Microsoft 365 Status (admin center) February 6, 2023 11:48 PM

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