Resolved incident

[office365] Message Attachment Size Limit Error

Front · Minor · Started

Duration
128h 41m
Severity
Minor
Status
Resolved

Summary

Minor · Resolved

There has been a significant reduction in the number of failures for Office 365 requests with attachments larger than 3 MB. We will continue to monitor.

View official incident ↗

Event timeline

How this incident unfolded, from the official status page.

  1. Investigating

    Front

    We received reports from a small number of customers that some drafts error when sending, with the message: "Unexpected problem sending attachment larger than 3MB to Office 365."

  2. Investigating

    Front

    Office 365 servers may sometimes fail to accept attachments larger than 3 MB. As a temporary alternative, we suggest using another method of sharing files with recipients, such as OneDrive. We have communicated the issue to Microsoft and are investigating additional mitigations.

  3. Resolved

    Front

    There has been a significant reduction in the number of failures for Office 365 requests with attachments larger than 3 MB. We will continue to monitor.