# Error 0x800CCC0E in Outlook

> Outlook error 0x800CCC0E usually means your outgoing mail server requires authentication, which is easy to fix.

Source: https://www.kualo.com/knowledgebase/email-troubleshooting/error-0x800ccc0e-in-outlook
Updated: 2026-06-04

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Outlook error 0x800CCC0E typically occurs because your outgoing (SMTP) mail server requires authentication and that setting is not enabled. Here is how to fix it.

1. In Outlook, go to **File > Account Settings > Account Settings**.
2. Select your email account and click **Change**.
3. Click **More Settings**, then open the **Outgoing Server** tab.
4. Tick the box labelled **My outgoing server (SMTP) requires authentication**.
5. Select **Use same settings as my incoming mail server**, or choose **Log on using** and enter your username and password manually.
6. Click **OK**, then **Next**, then **Finish**.
7. Restart Outlook and try sending again.

:::tip
Your username is normally your full email address. If you are unsure of your mail server settings, you can find them in cPanel under **Email Accounts**.
:::

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_Source: Kualo Knowledgebase — https://www.kualo.com/knowledgebase/email-troubleshooting/error-0x800ccc0e-in-outlook · © Kualo Ltd._