How to Fix Outlook Error 0x800CCC67 Easily

admin | October 13th, 2017 | MS Outlook

While using Outlook for sending and receiving email messages, a user might face some errors. These errors cause various problems and even might corrupt your database. One of the errors among them is Outlook and Live Mail SMTP Error 0x800CCC67. This issue indicated that the practice of sending an email could not be performed and “An unknown error message occurs”.

This error message is very critical and should be treated with great caution. This blog will provide you the best approach to solve this problem.

Now let’s see what the error is and its causes

Outlook error or Live Mail SMTP error 0x800CCC67 is caused when Outlook SMTP failed to establish a connection. This can be due to a number of reasons like:

  • Some incorrect Outlook Settings.
  • Some changes (like SSL or Port) made by the Internet service provider without any notification.
  • Installed antivirus or firewall are blocking the sending of emails by denying them access to the SMTP.

This one particular error message can occur in following forms:

Sending and Receiving Error “Outlook data files cannot be accessed”

‘Unknown Error 0x800CCC67’

Error Symptoms

  • When Outlook messenger is getting bad results and responses
  • Server suddenly and temporarily starts to get unavailable and also terminated the connection
  • Computer system restarts periodically
  • Wrong email account details like ID and Password

Solutions for Outlook Error 0x800CCC67

Disable interfering Applications:

The error message is encountered because of firewall and some antivirus installed in the system. Therefore, you might need to restart Outlook by disabling any email span or scanning software currently running on the computer. After successful connectivity and elimination of errors, you can re-enable them easily.

Fix Email Account Settings:

Some wrong email account settings can also cause Outlook Error 0x800CCC67. Like incorrect Incoming and Outgoing mail server address, enabled SSL features etc. Therefore you can also troubleshoot the error by making sure that the accounts settings are correct. You can also contact your Internet service provider in case of any problem and confusion.

Change Email Port:

You can make some changes in the SMTP port to resolve the error. Usually, the default outgoing email post is 25 which might get blocked by your ISP. So the outgoing port is changed to a second port number. And usually, the amend is made to 26 or 587 port number. In any case, you can contact the ISP for any confusion.

Alternative Solutions:

If the above-mentioned solutions do not solve the Error 0x800CCC67, then, in that case, your Outlook database files got corrupted. This scenario should be treated very carefully because if it is mishandled, it will become more difficult to fix the error. You can use PST Recovery Tool to fix Outlook Data files without any data loss effectively.


All possible causes and solutions for Outlook Error 0x800CCC67 have been discussed above and can be resolved using manual and automated solutions. The use of a direct tool is more preferred if the manual solutions do not work as suggested. The tool will repair corrupted Outlook files and also troubleshoot the error.