Fix Outlook Error 0x800CCC67 – Easy Fix

Updated On - July 30, 2024 by Nasir Khan | Reading Time: 5 minutes

Microsoft Outlook is one of the most widely used email clients in both professional and personal settings. Despite its robustness, users occasionally encounter various error codes, one of the most common being 0x800CCC67. This error generally signifies a problem with sending emails through the SMTP server. If you’re facing this issue, this comprehensive guide will help you understand the causes and provide step-by-step solutions to fix Outlook error 0x800CCC67.

What is Outlook Error 0x800CCC67?

Outlook error 0x800CCC67 typically appears when there is an issue with the SMTP (Simple Mail Transfer Protocol) server configuration or connectivity. Error 0x800CCC67 prevents the user from sending emails. However, it is possible that you can still receive the emails. The error message usually reads:

Task ‘Your Email Address – Sending’ reported error (0x800CCC67): ‘The server responded: 421 Cannot connect to SMTP server.’

Common Causes of Error 0x800CCC67

An error in Outlook can be caused due to various factors. Therefore, our testing team conducted some tests to find the prominent reasons that caused the Outlook error 0x800CCC67. The following points will highlight some of the causes.

• Incorrect SMTP Server Settings: Wrong configuration of the SMTP server details.
• ISP Blocking SMTP Port: Internet Service Providers (ISPs) sometimes block certain ports used for sending emails to prevent spam.
• Firewall or Antivirus Interference: Security software can block the connection to the SMTP server.
• Corrupted Outlook Profile: Issues within the Outlook profile itself.
• Network Issues: Problems with the network connection or stability.
• Third-Party Add-ins: Add-ins installed in Outlook might interfere with the sending process.

Solutions to Fix Outlook Error 0x800CCC67

After thorough research and testing, we identified the most reliable and practical solutions to resolve error 0x800CCC67. Additionally, in most test case scenarios, we discovered that a corrupt PST file was causing this error. Furthermore, these corrupt PST files can be easily recovered using the Outlook PST Recovery Tool.

Solution 1: Verify SMTP Server Settings

The most common cause of error 0x800CCC67 is incorrect SMTP server settings. Ensure the settings match those provided by your email service provider.

1. Open Outlook and go to File > Account Settings > Account Settings.
2. Select your email account and click Change.
3. Verify the following SMTP settings:
   Outgoing mail server (SMTP): Provided by your email provider (e.g., smtp.yourprovider.com).
   Port number: Commonly 587 or 465.
   Encryption method: SSL/TLS.
4. Click More Settings > Outgoing Server tab and check the option My outgoing server (SMTP) requires authentication.
5. Ensure that Use same settings as my incoming mail server are selected.

Solution 2: Check for ISP Blocking

Sometimes, ISPs block certain SMTP ports (like 25, 465, 587) to prevent spam. You can try changing the port number to one recommended by your email provider.

1. Open Outlook and go to File > Account Settings > Account Settings.
2. Select your email account and click Change.
3. Click More Settings > Advanced tab.
4. Change the Outgoing server (SMTP) port number to 587 or 465 and try sending an email again.

Solution 3: Disable Firewall and Antivirus Temporarily

Firewalls and antivirus software can block the connection to the SMTP server. Temporarily disable them to see if they are causing the issue.

1. Open your antivirus software and temporarily disable it.
2. Open your firewall settings and temporarily disable it.
3. Try sending an email from Outlook.
4. If the error is resolved, add exceptions for Outlook in your firewall and antivirus software settings.

Solution 4: Repair Outlook Profile

Corrupt Outlook profiles can cause various errors, including 0x800CCC67. Repair your Outlook profile to fix potential corruption.

1. Open Outlook and go to File > Account Settings > Account Settings.
2. Select your email account and click Repair.
3. Follow the prompts to complete the repair process.

Solution 5: Check the Network Connection

Sometimes, the solution is very simple but difficult to find. Similarly, poor or no internet connection can cause Outlook Error 0x800CCC67. Therefore, ensure your network connection is stable and working correctly.

1. Restart your router and modem.
2. Check if other devices can connect to the internet.
3. Ensure there are no network outages in your area.

Solution 6: Disable Third-Party Add-ins

Add-ins can interfere with Outlook’s functionality. Disable them to see if they are causing the issue.

1. Open Outlook in safe mode by holding the Ctrl key while opening the Outlook icon.
2. Go to File > Options > Add-ins.
3. At the bottom, select COM Add-ins and click Go.
4. Uncheck all add-ins and click OK.
5. Restart Outlook normally and try sending an email.

Solution 7: Update your Outlook Application

Ensure you have the latest updates for Outlook installed, as updates often include fixes for common issues.

1. Open Outlook and go to File > Office Account > Update Options.
2. Click Update Now.

Solution 8: Recreate Your Outlook Profile

Outlook error 0x800CCC67 can be repaired by creating a new Outlook profile. The steps to create a new profile in Outlook are as follows:

1. Open the Control Panel and go to Mail.
2. Click Show Profiles and then Add.
3. Enter a name for the new profile and follow the prompts to set it up.
4. Set the new profile as the default and restart Outlook.

Solution 9: Fix Outlook Error 0x80CCC67

In case none of the above solutions work, the Outlook PST file has probably been corrupted. A large PST file size can be one of the issues leading to PST file corruption. To fix Error 0x800CCC67, you need to repair your Outlook PST file. The Regain Outlook PST Repair tool easily recovers the data from corrupted Outlook PST files. Additionally, this tool can convert PST files to other file formats and offers many useful features and filters.

Steps to Fix Error 0x800CCC67 Using the Tool

1. Install and launch the PST Recovery Tool as an administrator.
2. Click on the option Add Outlook Files to add the PST files to the wizard.
3. Preview all the added PST files in the Advanced Preview Panel. Additionally, select the Desired PST Files.
4. Finally, click on the Export button and choose the desired destination path.

Advanced Troubleshooting to Repair Outlook Error 0x800CCC67

If the error persists even after trying all the above solutions, you might need to delve deeper into advanced troubleshooting.

Solution 1: Analyze Log Files

Outlook keeps log files that can help identify the root cause of the issue.

1. Enable logging in Outlook by going to File > Options > Advanced.
2. Under Other, check Enable troubleshooting logging (requires restarting Outlook).
3. Restart Outlook and reproduce the error.
4. Check the log files for detailed error information.

Solution 2:. Use Microsoft Support and Recovery Assistant

Microsoft provides a tool called Support and Recovery Assistant (SaRA) that can diagnose and fix Outlook issues.

1. Download and install SaRA from the Microsoft website.
2. Run the tool and select Outlook.
3. Follow the prompts to diagnose and fix the issue.

Conclusion

Outlook error 0x800CCC67 can be frustrating, especially when it disrupts your email communication. By following the steps outlined in this guide, you should be able to identify and resolve the issue efficiently. Each solution has been very meticulously tested and verified by our IT Team. Whether it’s verifying SMTP settings, checking for ISP blocking, or disabling conflicting software, each solution addresses a specific cause of the error. If the problem persists, seeking help from Microsoft support or using advanced tools like the Support and Recovery Assistant can provide further assistance. Maintaining a smooth email experience in Outlook requires regular updates and proper configuration. With the right approach, you can fix Outlook Error 0x800CCC67 and ensure your email operations continue without a hitch.