Email | Updated 2026
Quick Answer
Error 0x800C013B is an HTTP mail error that occurs when Outlook is configured to use HTTP instead of SMTP for outgoing mail. Change your outgoing server to mail.yourdomain.com using SMTP on port 465 with SSL and enable authentication.
For complete Outlook troubleshooting steps and all error codes, see our full guide:
Correct Email Settings
Most Outlook errors are caused by incorrect server settings. Use these values:
- Incoming/Outgoing Server -
mail.yourdomain.com - POP3 Port - 995 (SSL) or IMAP Port - 993 (SSL)
- SMTP Port - 465 (SSL)
- Username - your full email address
- Authentication - enabled for outgoing, SPA disabled
For step-by-step setup: How to Set Up Email in Microsoft Outlook
This article has been consolidated into our Common Outlook Email Errors guide for easier reference.
