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How to Fix Outlook Error 0x800CCC0E

By Sophia Bennett · About Zone Desire

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0x800CCC0E

Quick answer

Outlook error 0x800CCC0E means Outlook cannot connect to the mail server, usually because of wrong server settings, ports or a firewall. Check incoming and outgoing server names and ports, enable SMTP authentication, and allow Outlook through the firewall.

What does “0x800CCC0E” mean?

Outlook could not reach the SMTP/POP/IMAP server to send or receive email.

What causes it?

  • Wrong server name or port
  • Outgoing server authentication off
  • Firewall or antivirus blocking Outlook
  • Internet problem

Steps to try

Stop when the issue is resolved.

  1. File → Account Settings → select the account → Change.
  2. Check server names and ports with your email provider (for example IMAP 993 SSL, SMTP 587 STARTTLS).
  3. More Settings → Outgoing Server → tick My outgoing server (SMTP) requires authentication.
  4. Allow Outlook through Windows Firewall and antivirus.
  5. Restart Outlook and send a test email.

Need more support? Check the official help: Microsoft Support

FAQs

Does 0x800CCC0E happen with Outlook.com accounts?

It mostly affects POP/IMAP accounts from other providers.

Can I use port 25?

Many ISPs block port 25. Use 587 or 465 as your provider says.