Front incident

Exchange Online mailboxes sync delay [office365]

Minor Resolved View vendor source →

Front experienced a minor incident on November 25, 2024 affecting O365, lasting 18h 11m. The incident has been resolved; the full update timeline is below.

Started
Nov 25, 2024, 08:41 AM UTC
Resolved
Nov 26, 2024, 02:52 AM UTC
Duration
18h 11m
Detected by Pingoru
Nov 25, 2024, 08:41 AM UTC

Affected components

O365

Update timeline

  1. identified Nov 25, 2024, 08:41 AM UTC

    Our partner Microsoft is experiencing a service degradation affecting Exchange Online mailboxes. You can follow Microsoft Issue ID MO941162 for more details. This may cause outbound/inbound delays for customers using Office 365, as Front cannot connect to Microsoft servers.

  2. identified Nov 25, 2024, 10:49 AM UTC

    Microsoft is still investigating the issue; here is their latest update. > We’re continuing to investigate recent changes, service telemetry and the failure paths to determine the root cause of impact. Source: https://portal.office.com/Adminportal/Home#/servicehealth/:/alerts/MO941162 (You need to be an O365 admin to be able to access it)

  3. identified Nov 25, 2024, 03:47 PM UTC

    Microsoft is deploying a fix > At 15:27 CET > We’re monitoring the progress of the fix, which has been deployed to approximately 60% of the affected environments. We’re continuing our manual restarts on the remaining impacted machines. We are closely monitoring our systems for signs of recovery; however, we have not observed any significant progress at this time.

  4. monitoring Nov 25, 2024, 08:26 PM UTC

    Microsoft deployed a fix. Our systems are recovering. Latest update from Microsoft: > At 20:52 CET > We're continuing to redirect traffic and apply targeted remediation to impacted servers. > We've observed initially positive results in some areas, and we're monitoring service health closely as our mitigation workstreams continue in parallel.

  5. monitoring Nov 26, 2024, 12:07 AM UTC

    Our systems have fully recovered. We are now retrying failed tasks.

  6. resolved Nov 26, 2024, 02:52 AM UTC

    This incident has been resolved.