Microsoft has confirmed that the incident is not the result of a cyberattack and is actively rerouting traffic and restarting affected servers under service incident IDs EX1550543 and MO1550821. While engineers are beginning to see positive signs of server stability and partial regional recovery, users across the UK and worldwide may continue to experience intermittent login timeouts or delays sending and receiving emails until full capacity is restored.

For current information regarding expected resolution please go to the Microsoft 365 Admin Centre, check the public Microsoft Service Health Status portal, or follow @MSFT365Status on X.