How to resolve IMAP error 0x800CCC0E in Outlook?

Summary: This blog post will help you understand the reasons behind IMAP error 0x800CCC0E in Outlook, including server issue, incorrect port numbers, and Outlook data file corruption, etc. The article also shares the methods to fix IMAP error 0x800CCC0E in Outlook and outlines how an Outlook PST Repair software can come in handy when IMAP error 0x800CCC0E occurs due to corrupt PST file.

IMAP configured Outlook account may encounter error ‘0x800CCC0E’ when sending or receiving emails.

Understanding the Occurrences of ‘0x800CCC0E’ error

The error message with error code ‘0x800CCC0E’ can pop-up in these two formats:

  1. Task “’Checking for new mail in subscribed folders on your_account.com.’ reported an error (0x800CCC0E): ‘Outlook is unable to download folder INBOX from the IMAP e-mail server for account administrator@domainname.com. Error: Cannot connect to the server. If you continue receiving this message, contact your server administrator or Internet Service Provider (ISP)’”.

IMAP error 0x800CCC0E

  1. “’2 of 4 Tasks have completed successfully….! Task ‘Synchronizing subscribed folders for your_account.com’ reported an error (0x800CCC0E): ‘Outlook cannot synchronise folders for your_account.com. Error: Cannot connect to the server. If you continue receiving this message, contact your server administrator or Internet Service Provider (ISP)’”.

IMAP error 0x800CCC0E - Synchronization

What causes IMAP error – 0x800CCC0E in Outlook, and its solutions?

Cause 1 – Internet connectivity issue

Sometimes due to poor or no internet connection, you might receive an error message that states ‘Outlook error 0x800CCC0E cannot connect to the server.

Solution – Make sure that your device is connected to the Internet.

Also, verify that your Outlook application is not set to work offline (as shown in the screenshot below).

Work Offline

Cause 2 – Conflict with antivirus software

Anti-virus protection creates a barrier for the incoming/outgoing server.

Solution – You should check your anti-virus manufacturer’s website for suggestions on how you can ensure seamless compatibility between the antivirus software and Outlook.

Cause 3 – Firewall is blocking Outlook

Your firewall may block your ‘Outlook.exe’ (i.e. the executable file used to launch your mail client) from running. If the ‘.exe’ file is blocked, it cannot contact your mail server.

Solution – Try disabling the firewall rules and check if the ‘0x800CCC0E’ error is fixed.

NOTE: Make sure to enable the firewall rules after completing the task to avoid any security issues in your system.

Cause 4 – Unwanted and suspicious emails

Solution – Remove all the unwanted and suspicious emails, i.e. the ones coming from unreliable sources from your Outlook account.

Cause 5 – SMTP authentication issue

Some IMAP email accounts use an outgoing SMTP server that requires authentication. You may encounter the ‘IMAP error – 0x800CCC0E’ when your Outlook application is unable to authenticate the outgoing server (SMTP).

Solution –Turn on SMTP authentication and check if the issue persists.

1Open Outlook.

2 – Click File > Account Settings > Account Settings.

Account Info - Outlook

3 – In the Account Settings window on the E-mail tab, select an e-mail account and hit the Change button.

Account Setting

4 – In the Add Account window that pops-up, click on the More Settings button.

pop and imap account setting

5 – In the Internet Email Settings window, click the Outgoing Server tab.

6 – Ensure that the checkbox next to “My outgoing server (SMTP) requires the authentication” is checked.

Internet Email Setting

7 – Click OK and restart Outlook to check if the issue still persists.

Cause 6 – Incorrect port numbers

You may get error code ‘0X800CCC0E’ due to incorrect port numbers. For instance, if you’ve enabled encryption, but have set the Incoming server (IMAP) port number to a non-encrypted port number 143, or if you have not enabled encryption but have changed the port number to an encrypted port number 993.

Solution – To fix the problem, be sure to change the incoming server port to ‘143’ if you haven’t enabled encryption, or set the port number to ‘993’ if you’ve enabled encryption. To do so, follow these steps:

1 – Open Outlook, and click on File > Account Settings > Account Settings.

2 – In the Account Settings pop-up window, double-click on the Email Account.

3 – In the Change Account pop-up window, click on the More Settings tab, and then click Advanced.

4 – In the Internet E-mail Settings window that appears, click on the advanced tab and set Incoming server (IMAP) port number to 143 (if SSL function is not enabled) or 993 (if SSL/TLS is enabled).

IMAP error

5 – Click OK to apply the changes.

Cause 7 – Corrupt Outlook profile

Solution – To check whether your email profile is working correctly or not, create a new profile. If you’re able to send or receive e-mails by using the newly created Outlook profile, configure the new profile as your default profile. But there are a few limitations associated with this option. Even more, the username of the newly created Outlook profile will be different, which can cause a communication problem.

Cause 8 – Corruption in Outlook data file (PST)

If the above-mentioned manual methods have failed to resolve the error, it’s very likely that your personal Folders (.pst) File is corrupt and has become inaccessible.

Solution – Use Microsoft’s in-built Inbox Repair Tool (Scanpst.exe) to repair your corrupted or inaccessible PST file. Refer to this link to understand how the tool can be used to fix PST file corruption.

However, the Inbox Repair Tool has several limitations. Some of them are listed below:

  • It cannot further fix severely corrupt PST files
  • You may have a problem in accessing the recovered data
  • Repairing corrupt PST files by using Scanpst.exe can be a lengthy and time-consuming process, hence, as you’ll have to run the tool several times to fully repair the PST file

What if the Inbox Repair Tool does not work for you?

As a result, use Stellar Repair for Outlook to get a faster and more effective repair solution for corrupt PST files, without the limitations of Inbox Repair Tool. This Outlook PST recovery software helps:

  • Repairs severely oversized, corrupt or inaccessible PST files
  • Also recovers all mailbox components including deleted emails, attachments, contacts, calendars, tasks, notes, and journals
  • Reduces chances of further corruption by compacting and splitting large PSTs
  • It also saves the recovered mailbox components in different file formats
  • Rich graphical UI facilitates DIY PST repair process, without any professional assistance.

Conclusion

You may encounter IMAP error ‘0x800CCC0E’ in Outlook due to several reasons such as network connectivity issues, conflict with security applications, corrupt Outlook profile, PST file corruption, etc. Hence, this error resolves by using several manual methods, including disabling anti-virus software and Windows firewall, by verifying Outlook profile and changing the port number. In case of PST file corruption, try using the Microsoft built-in repair utility ‘Scanpst.exe’. But the Scanpst may fail. In that case, use the Stellar PST recovery tool to scan and repair the corrupt PST files.