How to fix Microsoft Outlook Error Code 0x800ccc6f

Error Code 0x800ccc6f typically indicates a problem with the SMTP (Simple Mail Transfer Protocol) server settings in Outlook. The SMTP server is responsible for sending outgoing emails from your account.

When this error occurs, it means that Outlook is unable to connect to the outgoing mail server to send your emails.

Error Code 0x800CCC6F

Possible Causes for this Error Code 0x800ccc6f:

Several factors can occurrence of error 0x800ccc6f in Outlook. Here are some common causes:

Incorrect SMTP Server Settings:

One of the primary reasons for this error is incorrect configuration of the SMTP server settings in Outlook. This could include issues with the server’s name, port number, or authentication settings.

Firewall or Antivirus Interference:

Sometimes, firewalls or antivirus software can block Outlook from connecting to the SMTP server, leading to the error 0x800ccc6f. These security programs may mistakenly identify Outlook as a potential threat or restrict its network access.

ISP Restrictions:

Your internet service provider (ISP) might have specific limitations on outgoing mail servers. If your ISP blocks certain ports or imposes restrictions on SMTP traffic, it can result in error 0x800ccc6f.

Server Downtime or Configuration Issues:

The SMTP server you are using might be experiencing temporary downtime or undergoing maintenance. Additionally, server misconfigurations or technical glitches can also cause this error.

Quick Troubleshooting Steps to Fix Error Code 0x800ccc6f

Now that we have identified some common causes of error 0x800ccc6f, let’s explore the steps you can take to resolve the issue:

Check SMTP Server Settings:

Verify that the server’s name, port number, and authentication settings for your SMTP server are correctly entered in Outlook.

Contact your email service provider or IT support if you are unsure about the correct settings.

Disable Firewall or Antivirus:

Temporarily disable any firewall or antivirus software on your computer and check if the error persists. If the error disappears, configure your security programs to allow Outlook’s access to the internet or add it to the exceptions list.

Try Alternate SMTP Server:

If your ISP imposes restrictions on SMTP servers, try using an alternate SMTP server. Contact your ISP or consult their website for information on the recommended server settings to use with Outlook.

Check Server Status:

Verify if the SMTP server you are using is experiencing any downtime or issues.

Visit your email service provider’s website or contact their support team for any announcements or known issues.

Repair Outlook:

If the above steps don’t resolve the error, you can try repairing your Outlook installation.

  1. Open the Control Panel on your computer.
  2. Navigate to “Programs and Features” (or “Add or Remove Programs”),
  3. Locate Microsoft Office or Outlook in the list.
  4. Select the repair option.


If you have tried all the troubleshooting steps mentioned above and are still encountering error 0x800ccc6f, it’s advisable to seek help from your email service provider or IT support team. They will have the expertise to diagnose and resolve the issue.


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