4 Methods to Fix Error 0x800ccc1a in Outlook 2007/2010/2013/2016

Amy Dennis

Apr 03, 2026 • Filed to: Recover Emails • Proven solutions

Microsoft Outlook is the most popular email client application used to send and receive emails. It also manages other things such as journals, events, calendar, contacts, and much more. Outlook error 0x800ccc1a occurs when there is an issue about Secure Socket Layer (SSL).

It is typically due to the wrong port number specified to POP3 or SMTP servers. This error does not allow you to perform tasks like sending and opening emails on your Outlook client. In our post, we're going to discuss the error and how to fix it in MS Outlook.

Part 1: Symptoms of Outlook Error 0x800ccc1a

Many Microsoft Outlook users have reported error 0x800ccc1a while sending or receiving an email. This code may occur in numerous locations within the system.

Though it carried few details in its name, it is still tough for the user to notice and fix the cause without any software or technical knowledge. If you have got this message on your PC that means there is malfunctioning in your system. Here are the symptoms:

• Crash of Window due to error
• System freezes for several seconds
• Frequent crash of PC while operating the same program
• You see Outlook error message in dialog box every time you open it
• Windows take a long time to respond to keyboard and mouse input or window running slow

Part 2: Causes of the Error 0x800cccc1a

Since Outlook has two servers for sending and getting emails, so if the client application is unable to contact one server, then the user will get an error. It shows an error message like:

"An unknown error has occurred. Your server doesn't support 'the encryption type' that you have specified. Kindly save any existing work and restart your system".

Numerous things can cause 0x800ccc1a error. The common reasons include:

1. Encryption Type

In some cases, the encryption type specified (typically SSL) can also be the cause of the problem.

2. Damaged Outlook Profile

If your Microsoft Outlook profile is corrupted or damaged, it can also be the reason behind the issue.

3. Incorrect Port Number

If the connection you are using has wrong IMAP, SMTP, or POP3 connectivity, a 0x800ccc1a error message can pop up. Usually, the user will set an incorrect port number for the outgoing server (STMP) or incoming server (POP).

4. Anti-Virus

If the installed antivirus software on your system has an email scanning feature, it can cause the error to occur.

5. Modern Authentication (OAuth2) Conflicts

A common cause of Error 0x800ccc1a in 2026 is the shift toward Modern Authentication (OAuth2). If your email provider (like Gmail or Microsoft 365) has enforced OAuth2, traditional SSL/TLS settings and app passwords may no longer work. If reconfiguring ports fails, you may need to remove the account from Outlook and re-add it using the "Automatic Setup" wizard. This ensures Outlook uses the correct authentication token instead of relying solely on the legacy port encryption that triggers the 0x800ccc1a handshake error.

Note: If you're running an Outlook version before Office 2016, then make sure you upgrade it to the latest version. It is because the older Microsoft Outlook versions can't get important security updates.

Part 3: 4 Methods to Fix Outlook Error 0x800ccc1a

You can easily fix the 0x800ccc1a problem by implementing the simple solutions mentioned below. Remember, the solution that you pick will hugely depend on the severity of Outlook 0x800ccc1a error.

Method 1: Reconfigure SSL Encryption and SMTP & POP Port Number Settings

The first method is to reconfigure the SSL configuration for Outlook 2010 above and 2007. You need to make some changes to the settings to resolve the issue. For this, perform the following steps:

For Outlook 2010, 2013 and 2016

To fix Outlook 2010, Outlook 2013, and Outlook 2016 error 0x800ccc1a, perform the following steps:

Step 1: Open Microsoft Outlook

Step 2: Click on the file and choose 'Info. '

Step 3: Go to 'Account Settings.'

Step 4: In the email account pop up window, click on the 'Advanced' tab and uncheck 'this server needs an encrypted connection (SSL) in the incoming server.'

Step 5: Hit 'Ok' and then click 'Next.'

Step 6: Now hit 'Finish,' 'Close' and restart the Microsoft Outlook.

For Outlook 2007

To fix Outlook 2007 error 0x800ccc1a, perform the following steps:

Step 1: Open Microsoft Outlook application.

Step 2: Head to 'Tools' and open 'Account Setting.'

Step 3: Choose an email and click on 'Change' in the pop-up window.

Step 4: Now click on 'More Settings.'

Step 5: In the internet email settings window, click on the 'Advanced' tab and uncheck 'this server needs an encrypted connection in the incoming server.'

Step 6: Hit 'Ok,' 'Next' and then 'Finish.'

Step 7: Click 'Close' and then restart the Microsoft Outlook.

Method 2: Use Outlook Inbox Repair Tool to Repair Microsoft Outlook PST Files

The second method to fix error 0x800ccc1a is using Inbox Repair Tool or Scanpst.exe. You can use it to repair minor problems with OST and PST files.

Step 1: Open 'File Explorer' and head to '\Program Files\Microsoft Office\Office 12' folder

Step 2: Now click on 'scanpst.exe' and browse to choose the damaged .pst file.

Step 3: Click on 'Start' repairing it. Also, click on repair if you got any error message on your system.

Step 4: As soon as the error gets fixed, you will receive a message 'repair complete.'

Method 3: Run Windows System File Checker

Step 1: Hit the 'Start' button and type 'Command' in the search box.

Step 2: Press the' CTRL +SHIFT' button and click 'Enter.'

Step 3: Click 'Yes' on the dialog box.

Step 4: A black window with a blinking cursor will pop up.

Step 5: Type 'sfc /scannow' and hit 'Enter.'

Step 6: Now open 'System File Checker' to scan all the errors and try to fix it.

Step 7: Restart Microsoft Outlook

Method 4: Try Professional Email Repair Tool — Wondershare Repairit

If manual port reconfiguration and ScanPST fail, the underlying data structure of your Outlook profile is likely severely corrupted. In this scenario, Wondershare Repairit for Email is the most effective solution. It can parse heavily damaged PST/OST files and restore them to a healthy state, effectively clearing the 0x800ccc1a error caused by profile corruption.

Step 1: Upload Corrupted Files

Launch Wondershare Repairit. Click on the "Email Repair" section and select "Select File." You can either "Find" the PST/OST file automatically or "Add File" if you know the exact directory.

Step 2: Start the Repair Process

Click the "Repair" button. The software’s advanced algorithm will reconstruct the file headers and repair the synchronization logic between your folders and the server.

Step 3: Preview and Save

Once the repair is complete, you can preview your emails, attachments, and calendar events. Select the repaired files and click "Save" to export them as a fresh PST file that Outlook can open without errors.

The Bottom Line

Microsoft Outlook application is used by big and small agencies to manage and store their email data. However, sometimes, error 0x800ccc1a occurs. It happens when there is a synchronization problem between the incoming and outgoing servers. Although there are numerous methods, we advise you to use the Stellar Outlook Repair tool to fix the error 0x800ccc1a in Outlook.

Besides allowing you to save all mailbox data in the PST format, Stellar Repair for Outlook also lets you save recovered files in EML, HTML, RTF, and PDF formats. The powerful tool can repair PST files of any sizes regardless of the severity of corruption. Give it a try today for the best experience.

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