Unable to send or receive email

Try these checks in order for Outlook.com:

1. Check whether Microsoft cloud storage or the mailbox is full. If storage is full, Outlook.com cannot send or receive email, and messages sent while it was full are bounced back and unrecoverable.
2. If the password was changed recently, update it. Also check whether the account was temporarily blocked because of unusual sign-in activity. If sign-in is failing, use the Microsoft account sign-in helper.
3. Open Drafts and Outbox and look for a stuck message.
4. If an email has an attachment larger than 25 MB, Outlook.com cannot send it. Remove the attachment, use a smaller file, or upload it to OneDrive and send a link instead.
5. Check Junk Email, the Other tab, and any filters. If a message was marked as junk by mistake, right-click it and choose Mark as not junk.
6. Check message sorting: select Filter > Sort > Date to restore chronological order.
7. Check whether email forwarding is enabled.
8. Check whether any email rules are moving or hiding messages.
9. If a non-delivery report was received, review the reason in the message. Common causes include an invalid recipient address, a full recipient mailbox, recipient server issues, or spam filtering.
10. If using Outlook on PC or Mac with an Outlook.com account, go to Send/Receive > Send/Receive all folders.
11. Make sure the internet connection is working by opening a browser and testing a site such as Microsoft or Bing.
12. If a specific sender’s email is missing and no error appears, ask the sender to review Sender Support in Outlook.com.

If these steps do not fix it, use Outlook.com support from Help in Outlook.com or contact support.

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