Outlook Outage.

A Microsoft 365/Exchange Online incident is affecting Outlook connectivity and mail delivery today, November 12, 2026, so check Microsoft’s service status and wait for the incident to be marked resolved before changing or reinstalling your account.^1^

What to do now

1. Open the Microsoft service health status page.
2. Look for an Outlook, Exchange Online, or Microsoft 365 incident.
3. If an incident appears, no local repair should be necessary. Messages may be delayed until Microsoft restores service; periodically retry Outlook.
4. If this is a work or school account, your Microsoft 365 administrator can also review the tenant’s service health information. Microsoft-hosted reports today describe Outlook and Exchange Online connectivity problems consistent with your symptoms.^2^

If service status becomes normal but your iPhone still cannot connect

First try the mailbox in a browser or on another device:

• Mailbox works elsewhere: the remaining problem is probably confined to the iOS app.
• Mailbox fails everywhere: continue monitoring service status or contact your organization’s Microsoft 365 administrator.

If you use Apple’s built-in Mail app and see “Account not authenticated,” “Please enter the password,” or “Cannot Get Mail – The connection to the server failed,” reauthenticate it:

1. Open Settings → Apps → Mail → Mail Accounts. On some iOS versions, use Settings → Mail → Accounts.
2. Select the affected Outlook account.
3. Open Account Settings or the password field.
4. Enter the current password and tap Done.
5. Open Mail and check whether new messages synchronize.^3^

If you use the Outlook for iOS app and email works in the browser after the outage has cleared, update Outlook from the App Store. If it continues failing, use Settings → General → iPhone Storage → Outlook → Offload App, then reopen the app. Offloading preserves its application data.^4^

Do not delete and recreate the account while the service incident remains active, because that will not resolve a server-side outage and could complicate recovery.

References

1. Microsoft service health status
2. office 365 Outlook and SharePoint seems to be unreachable today Nov ...
3. iOS & iPadOS users may experience issues accessing their Outlook and Hotmail accounts from the iOS/iPadOS default Mail app | Microsoft Support
4. Troubleshoot Outlook mobile issues | Microsoft Support