How to Fix Outlook Error 0x800CCC0E: Step-by-Step Guide

Microsoft has been widely recognized as an email client that is used by a large number of people for conducting business as well as personal conversations. Even though it is quite a reliable email client, users tend to choose it for the sophisticated features it presents. However, users often come across errors that hamper their work. The most common of the errors faced is the Outlook error 0x800CCC0E. This error occurs when the mail server cannot be reached by Outlook, and the user is unable to either send or receive mail.

While searching for a fix, you might find a lot of sources claiming to fix your issue “instantly”. Before we proceed, we will show you what Outlook Error 0x800CCC0E is and how you can know if it’s the exact error you encountered.

What is Outlook Error 0x800CCC0E?

The Outlook Error 0x800CCC0E is a server connection error that usually occurs when Microsoft cannot establish a stable connection with the outgoing or incoming mail server. The messages are often like:

1. Outlook cannot connect to the Outlook (SMTP) server.
2. Error Code: 0x800CCC0E
3. Connection to the server failed.

This error occurs mostly in desktop applications of Outlook and is commonly due to incorrect email configuration, poor internet connection, firewall issues, etc.

Classic Outlook vs. New Outlook for Windows

This error applies exclusively to the traditional Outlook for Windows, which is the GUI-based Windows desktop application that communicates with mail servers via the MAPI/SMTP protocols, saving email in a local . OST or . PST file. The new “New Outlook for Windows” employs a web-based sync layer and is not affected by 0x800CCC0E in exactly this manner.

If you’ve migrated to New Outlook and continue to encounter connection failures, the suggestions below (port, auth, profile) are generally not relevant, and the failure should be investigated as a sign-in or network error.

What are the Common Reasons for Outlook Error 0x800CCC0E?

Knowing exactly what triggers the error will also give you a better chance of fixing it. The first reason for the error is as follows:

• Incorrect Email Server Settings: If the SMTP, POP, or IMAP server settings or credentials are not correct, Outlook will be unable to connect to the email server and thus show the error.
• Weak or Unstable Internet Connection: If your network connection is weak or unstable, the mail server will not be able to communicate with the user.
• Antivirus or Firewall: The security software can sometimes mistakenly identify Outlook’s network activity as a threat or simply disable the required communication port (like SMTP port 587 or 465). This prevents Outlook from performing the task properly. For more details, check out: How to fix Outlook not receiving emails?
• Large Outbox or Corrupted Emails: If there are extremely large messages or some corrupted items in the Outlook folder, these can become a source of trouble for the normal Send/Receive Process. Thus, Outlook may be stuck in a loop trying to handle the corrupted or oversized emails, so the connection may be blocked.
• Corrupted Outlook Profile: Sometimes,​‍​‌‍​‍‌ an Outlook profile that has been kept for a long time can become damaged or corrupted. In case the OST or PST data file is involved, it may cause various types of synchronisation issues, whereby, among other things, it may be impossible to connect to the server. As a result, Outlook error 0x800CCC0E may occur.

How to Know the Error:

• Email fails to send or receive.
• SMTP connection timeout warning
• Frequent “Server not responding” messages.
• Outlook repeatedly asks to enter the password, even after typing it correctly.

Check out the article: How to Fix Outlook keeps disconnecting from Exchange Server?

How to Fix the Issue Outlook Error 0x800CCC0E?

You can resolve Outlook Error 0x800CCC0E by following the troubleshooting methods listed below.

Enable SMTP Authentication

• Open Account Settings in Outlook.
• Select the Email account and click More settings
• Then, go to the Outgoing Server tab.
• Check: My outgoing server (SMTP) requires authentication.
• Select the same settings as my incoming mail server.
• Click Ok and restart Outlook.

Disable Antivirus and Firewall to Fix Outlook Application Error 0x800CCC0E

There’s a chance your security software might have blocked it, causing “Outlook Error 0x800CCC0E”.

• Temporarily disable the antivirus software.
• Turn off the Windows Firewall.
• Try sending an email again.

If this overcomes the issue “Outlook Error 0x800CCC0E”, then add Outlook as an exception in the antivirus/firewall. Then re-enable security.

Change the SMTP Port

In case the ISP is blocking the default port, changing it will resolve the issues.

• Go to Account settings > More Settings > Advanced.
• Change the outgoing server(SMTP) port:
• Try 587 or 465
• Click Ok and save changes.

Create a New Outlook profile

A corrupted Outlook profile often causes connection errors.

• Open the Control Panel.
• Go to Mail > Show Profiles.
• Then, click Add to create a new profile.
• Configure the email account again.
• Select Always use this profile and choose the new profile.

Verify Email Server Settings

Incorrect server details can prevent Outlook from connecting, which could lead to Outlook Error 0x800CCC0E.

1. Confirm the SMTP server name provided by the email service provider.
2. Double-check the username and password.
3. Ensure the correct encryption type is selected.

Correct any incorrect details and restart the Outlook application.

Repair Outlook Data Files (OST/PST)

Damaged OST or PST files can lead to synchronisation and server errors.

1. Close Outlook.
2. Run the Inbox Repair Tool (ScanPST.exe)
3. Select the affected OST or PST file and start the repair process.
4. Restart Outlook after the repair is complete.

Start Outlook in Safe Mode to Rule Out Add-ins

If you have third-party add-ins in Outlook, then there is a chance that they could interfere with Outlook’s connection to the server. Follow the steps for the same:

• Close Outlook, press Windows Key +R, type outlook.exe /safe. Press Enter
• If Send/Receive works normally in Safe Mode, go to File > Options > Add-ins.
• Now, disable add-ins one by one; restart after each to find the culprit.

Updated Outlook

Using an outdated Outlook version causes compatibility issues:

1. Open Outlook and go to File > Office Accounts.
2. Click Update Options > Update Now.
3. Install available updates and restart Outlook.

Also, check out the solutions to – How to fix error code 0x8000ffff?

FAQs

Q) What does error 0x800CCC0E mean in Outlook?

A) It indicates that Outlook wasn’t able to open or maintain a connection to your outgoing (SMTP) or incoming mail server, resulting in the current send or receive failure. It’s a connection error-note that it may not be an incorrect password error; authentication errors are one of its most common causes.

Q) Is 0x800CCC0E the same as 0x800CCC0F?

A) No, however, they are very similar and tend to go hand in hand. 0x800CCC0E generally refers to a connection/send failure and 0x800CCC0F refers to a dropped or aborted connection during synchronisation. They are both generally caused by the same underlying problem – most recently the Gmail/Yahoo OAuth token problem detailed above.

Q) Why is this error constantly occurring only with my Yahoo or Gmail account?

A) This is a known problem Microsoft has confirmed for classic Outlook; this is caused by an expiring sign-in token that shouldn’t be expiring but isn’t prompting a re-authentication. Refer to the “Microsoft’s Own Confirmed Fix” section above for the two workarounds available.

Q) Does error 0x800CCC0E affect the New Outlook for Windows?

A) Not quite. New Outlook uses a different, web-based syncing technique, so if there’s an issue on that end, you generally get a sign-in box or some kind of generic “can’t sync” message rather than the generic error you’re seeing.

Q) How do I fix error 0x800CCC0E in Outlook 365?

A) Proceed one step at a time, check by check: if all your passwords and addresses are correct (you should be able to send/receive a test email), then check the other items in this list: internet connection, SMTP/IMAP/POP server names & port (587, or 465), SMTP auth enabled, disable antivirus & firewall temporarily for testing, check TLS, and-if you’re using a Gmail, Yahoo, or Microsoft 365 work account-try the fixes specific to those above before recreating your Outlook profile.

Conclusion

Outlook error 0x800CCC0E is one of the more common errors that can occur, but it can be easily solved, and most often occurs when there is a problem in communication with the server. Simply ensuring you have a good network connection, correcting the email settings, turning on SMTP authentication, and reviewing the firewall or antivirus settings can get you back up and running again without much trouble. However, if this doesn’t work, creating a new Outlook profile and then finally calling the email provider is likely to get Outlook working without any errors. With the right troubleshooting, we have a chance of getting Outlook back to normal quickly.