Outlook: Error 0x800CCC0D-E

Outlook error codes 0x800CCC0D and 0x800CCC0E mean the email client cannot find or connect to the mail server. The most common causes are an incorrect server hostname, DNS issues, or a firewall blocking the connection.

01. What These Errors Mean

• 0x800CCC0D - "Cannot find the email server." Outlook cannot resolve the hostname you entered for the incoming or outgoing server.
• 0x800CCC0E - "Cannot connect to the server." Outlook found the server but cannot establish a connection, usually due to a port or firewall issue.

02. How to Fix

Check server settings

In Outlook, go to File > Account Settings > select your account > Change, and verify:

• Incoming server: mail.yourdomain.com
• Outgoing server: mail.yourdomain.com
• Username: Your full email address (e.g., you@yourdomain.com)
• Ports: 993 (IMAP SSL) or 995 (POP3 SSL) incoming, 465 (SMTP SSL) outgoing
• Encryption: SSL/TLS

For the complete setup walkthrough, see How to Set Up Email in Microsoft Outlook.

Check for firewall blocks

If you entered incorrect passwords previously, your IP may be blocked. Use the Firewall Unblock tool to check.

Check DNS propagation

If you recently changed nameservers or DNS, mail.yourdomain.com may not be resolving yet. See DNS Changed But Site Not Showing. As a workaround, use the server hostname or IP instead of mail.yourdomain.com until DNS propagates.

Test webmail first

Try logging into webmail at https://yourdomain.com:2096. If webmail works, the server is fine and the issue is in Outlook's settings.

For other Outlook error codes, see Common Outlook Email Errors and our Email Troubleshooting Guide.

Quick Recap

1. 0x800CCC0D = cannot find server, 0x800CCC0E = cannot connect
2. Server should be mail.yourdomain.com
3. Use SSL/TLS with ports 993/995 (incoming) and 465 (outgoing)
4. Check for firewall blocks if you had failed login attempts
5. Test webmail first to confirm the server is working

Resolving Outlook connection errors · Last updated March 2026 · Browse all Email articles