Nylas incident

[US/EU] Elevated Errors for Attachments API Requests on Microsoft Exchange (EWS) Grants

Minor Resolved View vendor source →

Nylas experienced a minor incident on August 14, 2026, lasting 3h 5m. The incident has been resolved; the full update timeline is below.

Started
Aug 14, 2026, 02:15 PM UTC
Resolved
Aug 14, 2026, 05:21 PM UTC
Duration
3h 5m
Detected by Pingoru
Aug 14, 2026, 02:15 PM UTC

Update timeline

  1. investigating Aug 14, 2026, 02:15 PM UTC

    We are experiencing elevated error rates for the /attachment API endpoint affecting EWS grants for on-premises and hosted Microsoft Exchange providers in both the US and EU regions. Other grant types, including Microsoft Graph, Google, and IMAP, are not affected.

  2. monitoring Aug 14, 2026, 02:39 PM UTC

    Mitigated - We have implemented changes to address the elevated error rates affecting /attachment API requests for Microsoft Exchange (EWS) grants and are seeing recovery. We are continuing to monitor performance to confirm full recovery across both the US and EU regions.

  3. monitoring Aug 14, 2026, 03:02 PM UTC

    Error rates have returned to normal levels for /attachment API requests affecting Microsoft Exchange (EWS) grants in both the US and EU regions. We are continuing to monitor performance to confirm the issue remains fully resolved.

  4. monitoring Aug 14, 2026, 05:13 PM UTC

    Error rates for /attachment API requests affecting Microsoft Exchange (EWS) grants remain at normal levels across both the US and EU regions. We are continuing to monitor closely to confirm the issue remains fully resolved.

  5. resolved Aug 14, 2026, 05:21 PM UTC

    Error rates for /attachment API requests affecting Microsoft Exchange (EWS) grants have remained at normal levels across both the US and EU regions, and our monitoring confirms that the issue is no longer affecting customers. Thank you for your patience while we worked to address this issue. If you require additional assistance, please contact [email protected].