Symptoms

• Messages remain in the Outbox
• Outlook shows a send error
• Emails send from webmail but not Outlook

Possible Causes

• Internet connection is unavailable
• Outlook is working offline
• Account password or server settings changed

Step-by-Step Repair

1. Check that you can open a website and that Outlook is not set to Work Offline.
2. Open the Outbox and remove any message with a large attachment.
3. Restart Outlook and try sending a short test email.
4. Update the saved password in Account Settings.
5. Repair the Outlook profile if messages still will not send.

Related Tutorials