15-10-2021 12:07:00 AM (BST)
Issue Reported: 27/09/2021 12:00:00 AM
Microsoft Reference : EX291497
Issue Status: RESTORED
Issue Description: Some users are unable to send email or receive using their Exchange ActiveSync (EAS) synced iOS or Android device. Users are unable to send email or receive using iOS or Android devices that leverage EAS.
More info: Users were able to send and receive email as expected using the Outlook desktop client or Outlook on the web.
Scope of Impact: This problem impacted some iOS and Android users who attempted to send or receive email through EAS synced devices.
Final Update – 18/10/2021 09:19:00 AM : Microsoft confirmed that deployment has completed and verified through both telemetry and affected user reports that their fix to revert the Transport Layer Security (TLS) version 1.3 has mitigated impact.