We are currently experiencing disruption to email communications as a result of a Microsoft service outage that has affected organisations globally.
During the outage, some users were unable to send or receive emails, and access to mailboxes was impacted across Outlook, Outlook Web Access, mobile devices and Sedna.
Microsoft has since begun restoring services, and mailbox access is gradually returning. However, customers may continue to experience delays in sending and receiving emails while a backlog of queued messages is processed.
While email services continue to stabilise, please use alternative communication channels for urgent operational matters:
- Please contact your local ISS office, duty phone or usual operational contact directly. View Our Directory.
- WhatsApp: Contact your primary operational representatives via WhatsApp where available.
- Urgent Escalations: Critical issues should be escalated by phone to ensure immediate attention.
We apologise for any inconvenience caused and appreciate your patience as Microsoft continues to restore normal service.
Status: Service restoration in progress. Mailbox access is being restored, but email delivery delays remain possible.
Last updated: 1 September 2026, 04:00 BST (GMT+1)