How to Easily Fix Outlook Error 0x800ccc67 in Windows?

What Causes Outlook to Show an SMTP Error in Outlook?

Error 0x800CCC67 is typically associated with server authentication failures or network communication problems during email transmission. It is an SMTP (Simple Mail Transfer Protocol) protocol error that occurs when you send an email to someone and configure it with improper authentication. 

Why Does Outlook Express Show Error 0x800CCC67?

You may encounter the Outlook error “0x800CCC67” due to several underlying causes:

• When you accidentally enter the wrong server address, port number, or encryption type.
• If you do not enable the outgoing server authentication, it will lead to communication failure.
• Sometimes, third-party or security software can interfere with or block the SMTP port, disrupting email-sending functionality.
• Weak or fluctuating internet can also cause an error and interrupt the sending process. 
• Outdated email configuration and damaged extensions/plug-ins can interfere with email functionality.

How to Fix Outlook Error 0x800ccc67?

To fix Outlook error 0x800CCC67, implement specific solutions suited to your Outlook version and operating system setup. Also, you can apply the recommended professional tool that simplifies the task. In the following section, we elaborated on various manual solutions to resolve the error.

Manual Method to Fix Outlook SMTP Error

The Outlook error “0x800CCC67” can occur due to various factors, so resolving it may require trying multiple solutions. Here are a few effective troubleshooting steps you can take to fix the issue:

1. Check SMTP Server Settings

To manage incoming and outgoing email, the Outlook application uses an SMTP server. Incorrect SMTP configuration causes errors and sending failures. Verify all the SMTP configurations and proper setups to avoid disruption and maintain smooth communication.

1. Download and install the Outlook application on your computer to begin managing your emails efficiently and securely.
2. After that, go to the info section, followed by the menu option.
3. Next, go to the Info section in Outlook, then click on Account Settings and choose Account Settings from the drop-down menu.

4. In the Email tab, choose your desired email account and click on the Change option.

5. Here, verify all the email configurations properly to avoid any chance of disruption in the future.

Why? 

Incorrect SMTP settings prevent Outlook from connecting to your mail server properly, causing sending failures.

2. Check for ISP Port Blocking to Fix Outlook SMTP Error

Sometimes, Internet Service Providers block SMTP ports to minimize spam and unauthorized email activity. This port helps prevent unauthorized email sending. If your SMTP port is blocked, users should switch to an alternative port.

1. Make sure your SMTP port is blocked by contacting your ISP or checking their supported website.
2. If your port is blocked, change your SMTP port to
   1. 587 for TLS
   2. 465 for SSL
3. After that, update the port number in the MS Outlook application accordingly.
   

Why? 

If the port Outlook uses is blocked by your ISP, your emails will not be sent.

3. Temporarily Disable Antivirus/Firewall

Antivirus and firewall programs are designed to protect your computer by monitoring network traffic and blocking suspicious activity. Sometimes, they mistakenly identify legitimate outgoing SMTP connections as potential threats. This blockage can result in emails failing to send properly.

• To determine if your security software is causing the issue, temporarily disable your antivirus program and firewall.
• While the security software is disabled, open Outlook and attempt to send an email. If the email sends successfully, this confirms that the antivirus or firewall was blocking the SMTP connection.

Why? 

Antivirus or firewall blocking is a common cause of SMTP issues, especially if it blocks ports 465 or 587.

Professional Tool to Fix Outlook Error 0x800ccc67

If you tried all the suggested methods and your error still shows, it means there is a problem with your PST file. For this, you can try the Aryson PST Recovery Tool. The tool safely recovers all essential data and allows you to convert your file into a universal format for easy access. Besides this error, the tool can also fix error 0x8004010f. Moreover, the GUI of the tool is simple to use for all types of users, regardless of their technical skills. 

Steps to Fix 0x800ccc67 Error in Outlook

1. Download and install the PST Recovery Tool on your computer.
2. Next, click Open and locate the PST file from your local drive to begin the recovery process.
3. Choose the desired recovery mode and click on the OK button.
4. Tap on the recovered data to preview and choose the desired data.
5. Now, select the desired saving format and apply any necessary filters.
6. Finally, click the Save button to complete the PST corruption repair process.

Conclusion

Fixing Outlook error 0x800CCC67 includes identifying its root causes and applying the correct troubleshooting steps or tools. The above-outlined solutions can help to fix Outlook error 0x800ccc67 and restore smooth email functionality. If the error is due to severely corrupted PST files, consider using a reliable repair tool. Aryson PST Recovery software effectively restores damaged PST files with accuracy and integrity. It also recovers emails, attachments, contacts, calendars, and more, ensuring complete data restoration from the corrupted file.