Cloud 9 incident

Office 365 Degraded Performance - Outlook / Exchange

Minor Resolved View vendor source →

Cloud 9 experienced a minor incident on August 31, 2026, lasting 6d 21h. The incident has been resolved; the full update timeline is below.

Started
Aug 31, 2026, 04:00 PM UTC
Resolved
Sep 07, 2026, 01:00 PM UTC
Duration
6d 21h
Detected by Pingoru
Aug 31, 2026, 04:00 PM UTC

Update timeline

  1. investigating Aug 31, 2026, 04:00 PM UTC

    Office 365 has shown degraded performance, affecting some tenants more than others, over the last 3 days (since Monday). As of today, Wednesday, we have seen the affects of this performance degradation get worse and have officially posted a status update as the majority of our customers now seem to be afffected in some way or another. Reports are available here: https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect https://downdetector.com/status/microsoft-365/

  2. monitoring Sep 03, 2026, 11:58 PM UTC

    Microsoft claims that this issue is resolved. We will monitor and update with any news if we receive it.

  3. resolved Sep 07, 2026, 01:00 PM UTC

    Services appear nominal. We have closed out observation of the issues related to M365.