Email Synchronization Issues: Fixing Outlook Error 0x800CCC1A

Outlook error 0x800CCC1A indicates that there is a problem with synchronizing the incoming and outgoing servers. It is usually caused by an incorrect user's account settings or password or an issue with the Secure Sockets Layer (SSL) protocol used for secure email communication.

The error message that appears on the screen usually reads, "Your server does not support the connection encryption type you have specified. Try changing the encryption method. Contact your mail server administrator or Internet service provider (ISP) for additional assistance."

When does Outlook receiving error 0x800CCC1A appear?

Outlook receiving error 0x800CCC1A typically appears when users attempt to send or receive emails using an encrypted connection. This may also occur while changing the account settings or during regular use if there are issues with the email server or the user's internet connection.

The reasons behind Outlook error 0x800CCC1A

Outlook error code 0x800CCC1A gives a clue that there is a problem with the selected encryption type. Overall, there are several reasons that can lead to the Outlook receiving error 0x800CCC1A:

• Incorrect SSL settings. One of the primary reasons for the 0x800CCC1A error is having incorrect SSL settings in the user's Outlook account. This could be due to a recent update or changes made to the email account settings, causing a mismatch between the encryption type specified and what the email server supports.
• Outdated or incompatible email server. Another possible reason for Outlook error 0x800CCC1A is an outdated or incompatible email server that does not support the SSL encryption that the user has specified in their Outlook account settings. This is more common with older email servers or those that have not been properly configured for secure communication.
• Firewall, antivirus, or third-party add-ins. Sometimes, firewall or antivirus software can interfere with the SSL connection and cause 0x800CCC1A Outlook error to occur. This may happen if the software is blocking specific ports required for secure email communication or if it is incorrectly identifying the SSL traffic as potentially harmful.
• Network or connectivity issues. In some cases, Outlook receiving error 0x800CCC1A can be triggered by network or connectivity problems. For example, if the user's internet connection is unstable or experiencing high latency, it may cause issues with establishing a secure connection to the email server, resulting in the error message.
• Corrupted Outlook profile. A corrupted Outlook profile can also lead to the 0x800CCC1A error. This may happen due to various reasons, such as a software bug, a sudden power outage, or improper system shutdown, causing the profile settings to become damaged or unreadable.
• Incorrect email server address or port number. Another reason for Outlook error 0x800CCC1A can be entering an incorrect email server address or port number in the Outlook account settings. This may happen if the email provider has changed its server settings or if the user has entered the information incorrectly, leading to a failure in establishing a secure connection.
• Outdated Outlook version. Using an outdated version of Outlook can also contribute to the occurrence of the 0x800CCC1A error. Older versions of Outlook may not support the latest SSL protocols or have compatibility issues with newer email servers, causing the error to appear when attempting to send or receive emails securely.
• SSL certificate issues. In rare cases, Outlook error 0x800CCC1A can be caused by issues with the SSL certificate used by the email server. This may happen if the certificate has expired, is not properly installed, or is considered untrustworthy by the user's system or Outlook application.
• Windows system file corruption. System file corruption within the Windows operating system can also lead to the 0x800CCC1A error in Outlook. Damaged or missing system files may affect the functionality of the SSL protocols, causing Outlook to display the error message when attempting to send or receive emails securely.

How to fix Outlook receiving error 0x800CCC1A

To resolve the Outlook receiving error 0x800CCC1A and resume secure email communication, try these step-by-step solutions:

Step 1. Verify SSL settings in Outlook

1. Open Outlook and go to File > Account Settings > Account Settings.
2. Select your email account and click Change.
3. Click on More Settings and navigate to the Advanced tab.
4. Check if the Incoming server (IMAP) and Outgoing server (SMTP) port numbers match the ones provided by your email provider. Also, ensure that the correct encryption type (SSL/TLS or STARTTLS) is selected.
5. Click OK, then Next, and finally, Finish to save the changes.

Step 2. Address SSL certificate issues

1. Contact your email provider or server administrator to verify if there are any issues with the SSL certificate used by the email server.
2. If necessary, update or replace the SSL certificate to resolve the issue.

Step 3. Update email server address and port number

1. Contact your email provider to confirm the correct email server address and port number.
2. Update the information in your Outlook account settings as described in Step 1.

Step 4. Update Outlook and email server (if possible)

1. Ensure that you are running the latest version of Outlook. To check for updates, go to File > Office Account > Update Options > Update Now.
2. If you have control over your email server or can contact the administrator, make sure the email server is up to date and supports the SSL encryption type you have specified in your Outlook settings.

When you update your email server settings, the duplicates may appear in your mailbox. Using special deduplication utilities, you can effectively and quickly remove duplicate emails, contacts, calendar events, tasks, notes and journal entries from any folder in your Outlook mailbox.

Step 5. Check network and internet connection

1. Verify if your internet connection is stable and has a good signal strength.
2. Try connecting to a different network to see if the issue persists.

Step 6. Check the third-party software settings

1. Temporarily disable your firewall and antivirus software to see if they are causing the issue. If the error is resolved, add exceptions for Outlook and the required ports in your firewall and antivirus settings.
2. Ensure that your antivirus software is up to date and not flagging SSL traffic as potentially harmful.

Step 7. Repair corrupted Outlook profile

1. With closed Outlook, go to Windows Control Panel's Mail > Show Profiles.
2. Select the affected profile and click Properties > Email Accounts > Repair.
3. Follow the on-screen instructions.

Consider creating a new Outlook profile and configuring it with the correct email account settings.

Step 8. Repair Windows system files

1. Run the System File Checker (SFC) tool by opening a command prompt with administrative privileges and typing "sfc /scannow" Press "Enter" on your keyboard and wait for the process to complete.
2. If any corrupted system files are found and repaired, restart your computer and check if the error is resolved in Outlook.

Step 9. Change Transport Layer Security (TLS) registry settings

1. Press Win + R, type "regedit" and click OK.
2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client.
3. Set the registry value of Enabled to "0" and Disabled (Default) to "1".

It is strongly advised not to make direct edits to the Windows registry unless absolutely necessary. Making incorrect modifications to the registry can lead to irreparable errors in the system. Editing the registry requires utmost caution and advanced technical skills.

In conclusion

The Outlook error 0x800CCC1A is associated with issues in secure email communication, typically caused by incorrect SSL settings, corrupted Outlook profile, or other factors. By following the provided steps mentioned in the text, you can efficiently identify and fix the problem. Advanced duplicate removers help mitigate the risk of duplicates when changing server settings.

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About Author

David Godfrin is a software developer and blogger for Outlook and Exchange. He has a strong background in IT and works in the field of software development and tech support since 2011.