No email, phones and Laptops

Microsoft is currently reporting an Exchange Online service degradation affecting mailbox access from Outlook on the web, desktop clients, and phones, so do not reset or reconfigure every device while Microsoft is restoring the service.^1^

Check restoration progress

If you are a Microsoft 365 administrator:

1. Sign in to the Microsoft 365 admin center.
2. Go to Health → Service health.
3. Open the active Exchange Online incident.
4. Review User impact, Status, Last updated, and All updates for Microsoft’s latest restoration information.
5. Select Manage notifications for this issue if you want incident updates sent to an alternative email address.

Service-health incidents include Microsoft’s investigation and mitigation updates. The current information does not provide a dependable completion time; the incident record is the authoritative place to monitor progress.^2^

If the admin center is inaccessible, continue checking the public Microsoft service status page.

What to do now

• Do not delete Outlook profiles, remove accounts, change passwords, or reinstall Outlook. An organization-wide failure across web, laptops, and phones is consistent with the reported service incident rather than an isolated client configuration problem.
• Tell users that email access and delivery may remain unavailable or delayed until Microsoft completes mitigation.
• Use another communication channel for urgent business messages.
• After Microsoft marks the incident Service restored, test Outlook on the web first, then desktop and mobile clients.

If your tenant remains affected afterward

If the incident is marked resolved but your users still cannot connect:

1. In Health → Service health, select Report an issue and submit the tenant-specific symptoms. Microsoft uses those reports to determine whether an additional incident exists.^2^
2. Run Diag: Troubleshoot Email Delivery from the Microsoft 365 admin center for affected sender and recipient addresses. This requires a Microsoft 365 administrator account and is not available in certain sovereign cloud environments.^3^
3. Open a Microsoft 365 support request and reference the Exchange Online incident, affected users, failure start time, and whether Outlook on the web is still failing.

Billing or price concerns are separate from outage restoration; raise those through your Microsoft 365 billing partner or an admin-center support request after documenting the duration and business impact.

References

1. Microsoft service health status
2. How to check Microsoft 365 service health
3. Find and fix email delivery issues as a Microsoft 365 for business admin