Sending, receiving, and organizing email in Outlook on the web for business
Yes—Microsoft is currently experiencing an Outlook-related service incident affecting some consumer and business users, so delayed or missing email in Outlook, Outlook.com, and Outlook on the web may be part of that outage rather than a problem with your device. ^1^ ^2^
What to do now
- Check the Microsoft service-health page for recovery updates.
- Do not uninstall or reconfigure Outlook while the incident remains active. A Microsoft-side mail-delivery outage cannot be repaired from your computer.
- Ask someone to send you a test message and retain any non-delivery report they receive. Messages may arrive after service recovers, but messages rejected with a non-delivery report might need to be sent again.
- If this is a work or school account, ask your Microsoft 365 administrator to open:
Microsoft 365 admin center → Health → Service health → Exchange Online.
The Active issues Microsoft is working on section provides tenant-specific incident details and progress. Service Support and Helpdesk administrators can also view this page. ^3^
If Exchange Online is shown as degraded, Microsoft advises monitoring the incident rather than opening another service request because engineers are already working on restoration. ^4^
If email still does not arrive after Microsoft reports recovery
For a personal Outlook.com, Hotmail, Live, or MSN mailbox:
- In Outlook.com, open Settings → General → Storage. A full Microsoft cloud storage allocation prevents sending and receiving; messages sent while it was full are bounced and cannot subsequently be recovered.
- Check Other, Junk Email, Deleted Items, and Archive.
- Select Filter → Sort → Date.
- Open Settings → Mail and inspect:
- Rules
- Forwarding
- Junk email → Blocked senders
- Send another test message from a different account and check whether the sender receives an error.
These are Microsoft’s documented checks for missing Outlook.com mail. ^5^
For a business mailbox, an administrator can run Diag: Troubleshoot Email Delivery from the Microsoft 365 admin center after confirming that no active Exchange Online incident remains. The diagnostic requires a Microsoft 365 administrator account and is unavailable in certain specialized Microsoft 365 environments. ^4^
Reaching Outlook.com support
Once Outlook.com support is reachable:
- Sign in to Outlook.com.
- Select Help on the menu bar.
- Enter cannot receive emails.
- Scroll to Still need help? and select Yes.
- Provide the approximate start time, examples of affected senders, and any non-delivery errors—without posting complete email addresses publicly. ^5^
References