Several colleagues say Outlook or Teams stopped working at the same time. Before resetting profiles or changing network settings, check whether the problem affects one device, one office or a Microsoft 365 service used across the organisation.

Make a short record of the impact

Record the start time in UAE time, the exact feature affected and the result on two different devices. For example, compare Outlook on the web with the desktop app. If appropriate, compare a second office or an approved alternate connection. Distinguish a sign-in failure from a mailbox that opens but cannot send. Record exact error text with account details removed.

Check service health for your organisation

Microsoft’s service health guidance explains where authorised administrators can view incidents and advisories in the Microsoft 365 admin centre. Match the affected service, feature, time and impact statement to your report. Save the incident ID for internal updates. If the symptoms match, follow the documented workaround where applicable and let staff know when you will check again.

A dashboard with no matching incident leaves the cause open. Continue checking local connectivity and tenant changes, and use the Report an issue option if appropriate. When an issue concerns delivery to a specific mailbox and the service is otherwise working, the Exchange Online message trace guide covers the separate investigation.

Close the incident with a business test

Retest the task that staff could not complete, such as joining a meeting or sending and receiving a message from accounts you control. Check any work held for later and confirm who owns follow-up if the symptoms persist. Keep the incident reference and a brief record of how you ruled out local causes.

ITZ’s Microsoft 365 administration and support service can help assess the scope and prepare an escalation. Share the affected feature and when the issue started.

Review your Microsoft 365 service incident

Bring a redacted error, the affected locations and any incident ID. Use the form to discuss triage and recovery checks. Review Your Microsoft 365 Service Incident