# Front: [office365] Message Attachment Size Limit Error

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-04-17 13:15 UTC · Resolved: 2025-04-22 21:56 UTC · Duration: 5 d
- Updates: 3 · Affected components: O365
- [Vendor status page: https://stspg.io/c68wg7mcpn43](https://stspg.io/c68wg7mcpn43)
- [Company: Front](https://rewindex.com/company/front.md)

## Timeline of updates

- **investigating** 2025-04-17 13:15 UTC: 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."
- **investigating** 2025-04-17 18:47 UTC: 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.
- **resolved** 2025-04-22 21:56 UTC: 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.


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Canonical: https://rewindex.com/company/front/incidents/bkrj5p8m820y · Markdown: https://rewindex.com/company/front/incidents/bkrj5p8m820y.md · JSON: https://rewindex.com/api/v1/companies/front/incidents/bkrj5p8m820y · Generated 2026-10-18T11:28:24.084Z