Fixing Outlook Error 0x800CCC0E on Windows 10

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Outlook is one of the most widely used e-mail applications in the world. If you want to send or receive an email or message on the desktop, synchronization is an essential process. Mistakes in perspective can occur and there is no need to worry. The Outlook 0x800CCC0E Office 365 error occurs in two cases:

  • When an email is sent without the email account being configured in Outlook.
  • When there is a conflict between SMTP servers.

If you are facing the same problem, you need to know how to correct the error. Reading this blog will help you understand why the error occurred and how you can easily fix the problem.

Check your Internet Connection

Your Internet connection may not be stable. Many factors are essential for a consistent Internet connection. So check for configuration and hardware changes that cause your system to lose connectivity.

Repair Outlook

You can first try to correct the Outlook 0x800CCC0E error with Program & Functions.

  • Press the Windows and R keys to get the “Run” window. Type appwiz.cpl to get the Program & Functions Wizard.
  • You can also open the Control Panel->Programs & Functions. Enter Control Panel in the search bar and navigate to Programs and Features in the Control Panel window.
  • Find and select Microsoft Office 365 from the list.
  • Then click “Change” at the top of the Programs and Features window. In the next window, select Repair and follow the on-screen instructions.
  • Then restart Outlook and see if error code 0x800CCC0E appears again.

If the problem persists, proceed to the next method.

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Delete Duplicate Accounts

Another possible solution is to search for duplicate accounts that may cause conflicts and delete them. Duplicate accounts are known to cause the 0x800CCC0E error. Just follow these steps:

  • Select Tools from the Outlook menu.
  • Go to Accounts and navigate to the Mail tab.
  • Select each duplicate mail account displayed.
  • Click the “Delete” button to delete these accounts.

When the process is complete, restart Outlook and verify that the 0x800CCC0E error code still exists. If it does, try the following solution.

Check the Antivirus Application and Disable It

Another reason for this error may be the antivirus program that is currently installed on your system. Disable the anti-virus program, firewall software, anti-spam software, or email scanning software that is currently running on your computer. Sometimes these types of programs prevent you from logging in to your email account properly. Therefore, disable all programs until you start accessing your email.

Changing the Server Port Number

  • Open Outlook.
  • Open the file > Tools > Account Settings.
  • In the Account Settings window, click the E-mail tab. The following window should open.
  • Select your e-mail account from the list.
  • A new window entitled “E-mail Account” should open. Locate and click the More Settings button.
  • The next window entitled “Internet E-mail Settings” should open.
  • Open the “Advanced” tab.
  • Change the port number of the outgoing mail server (SMTP) to 587.
  • Click OK to apply the changes.


In this blog, we mentioned several reasons that cause the Outlook error 0x800CCC0E with its respective manual tips. The manual approach is free of charge and can be easily executed by following the methods mentioned above. However, if the manual approach does not correct the error in this case, it is recommended to redirect to a third-party tool called Outlook Recovery. This is an easy-to-use tool that can effectively correct the error.

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