Status checked at 8.20am GMT on Friday 13 November 2026.

Oxfordshire businesses waiting for a customer email or a Teams invitation this morning could be affected by a global Microsoft 365 outage that began on Thursday. Microsoft says some users may be unable to open their work inboxes in Outlook on the web, on desktop or on mobile. Email delivery can also be delayed. That means a customer or supplier could be slow to receive a message even if your own inbox is working. Microsoft’s public update did not give a figure for how many Oxfordshire businesses were affected.

What’s affected

  • Outlook and work email. The main disruption is to Exchange Online, the service behind Microsoft 365 work mailboxes. Some users may have trouble opening their inboxes, and messages may arrive late.
  • Teams meetings. Scheduling meetings, sending invitations and viewing or changing calendar events can fail. Microsoft says most calls, existing meetings, group chats and channel messages are still working.
  • SharePoint and Copilot. Some users may have trouble sharing SharePoint files outside their organisation, although Microsoft says files stored directly in SharePoint remain accessible. Copilot Chat may fail to load or respond.

What businesses can do this morning

If an order, appointment or deadline depends on an email being seen, phone the recipient to confirm. If you already have a Teams meeting link, try joining from that link.

Ask your IT team or provider to check Microsoft 365 Service health in the Microsoft 365 admin centre for EX1550543 (Exchange Online) and MO1550821 (the wider Microsoft 365 incident). Anyone who cannot access the admin centre can check Microsoft’s public status page.

When will it be fixed?

In its 7.29am public update, Microsoft said a software fix had improved stability on some servers and it was working to roll it out more widely. The company said it was unaware of any malicious activity behind the incident and would publish a fuller explanation after recovery. At 8.20am, Microsoft was still reporting disruption and had given no time for full restoration. Its next update was due by 8.30am GMT.