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Microsoft 365 services experiencing disruptions

Published: 22 January 2026

Microsoft is reporting a service issue that may affect multiple Microsoft 365 services, including Exchange Online, the Microsoft 365 suite, OneDrive, and SharePoint Online.

What you may notice:

  • Some users may see a “451 4.3.2 temporary server issue” when attempting to send or receive email through Outlook.
  • Impacted functions may include (but are not limited to):
    • Sending and receiving email through Exchange Online
    • Searching within SharePoint Online and/or Microsoft OneDrive
    • Creating chats, meetings, teams, channels, or adding members in Microsoft Teams

We are monitoring the situation and working to restore services as quickly as possible. Updates will be shared as they become available.

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