How to Fix Outlook Error 0x800CCC0E

Microsoft Outlook is a popular email application that many people use to send and receive messages, organize meetings, and stay in touch with contacts. It is an easy way to communicate comfortably and effectively. However, Outlook also has some problems. In particular, one error, Outlook error 0x800CCC0E, can be annoying and difficult to fix.

Outlook error 0x800CCC0E is a common problem for Outlook users. This is why Quantrimang.com has compiled some step-by-step solutions that will allow you to fix the error message and get back to using Outlook like before!

Method 1: Repair Outlook

Windows 10 and Windows 11 have a built-in repair tool that can be used to fix Outlook issues. This method is the simplest method to resolve Outlook error 0x800CCC0E. If you are using Microsoft Office for the Web or Outlook for Mac, this tool may not work. Check out other solutions that may help!

1. Press the Windows + X keys at the same time, then select Apps and Features from the context menu.

2. Locate Microsoft Outlook, then click on it. From the available options, click the Modify button .

3. Select the Quick Repair option , then click Repair . Wait for the software to detect and fix any problems. This may take a few minutes depending on your configuration.

4. Once the repair is complete, launch Outlook and see if you still get the same error message. If so, don't worry - there are more tricks to try below!

Method 2: Remove Duplicate Accounts from Outlook

Sometimes, adding the same account multiple times will crash your Outlook application. In this case, you need to manually delete duplicate Outlook accounts. To do this, follow the instructions below!

1. Launch the Outlook application. Click the File menu from the ribbon header interface. This will take you to the Backstage view, which allows you to better customize your application and documents.

2. Make sure to stay on the default Info page . Here, click on the button that says Account Settings .

3. A new window will open. Once in the Account Settings window, switch to the Email tab from the navigation.

4. Review the list of accounts added to Outlook. Select any duplicate accounts, then click Remove to remove them from your app.

5. Once you are done deleting the duplicate accounts, click OK and restart Outlook. You will be able to see if the error is now resolved.

Method 3: Change the server port

Changing your server port number may fix error 0x800CCC0E in Outlook.

1. Open Outlook and navigate to File > Info > Account Settings > Email .

2. Select your email account from the list. If you have added the same account multiple times, be sure to follow the previous method to remove duplicates!

3. When the email account window opens, click the More Settings button , this will open another new window.

4. Switch to the Advanced tab . Delete the current Outgoing Server (SMTP) port number and enter 587. This will change your port.

5. Click the OK button and restart Outlook. You will immediately know whether this method was successful or not.

Method 4: Adjust server settings in Outlook

If you can't change the port number or you've tried it and it didn't work, try changing your server settings. This may help Outlook work better and authenticate your account to avoid the 0x800CCC0E error.

1. Open Outlook and click the File menu . From here, navigate to Account Settings > Server Settings .
2. Verify that the incoming mail settings are as given below:
   • User name : This will display your full email address.
   • Password : This password must match the password you use to log in to your webmail.
   • Server : imap.one.com should be selected.
   • Port : 993 must be entered as the port number.
   • Encryption : SSL/TLS should be selected.
   • Secure Password Authentication (SPA) : This option should be disabled.
3. Once you verify this, make sure to check your outgoing mail settings and match them to the following options:
   • Server : send.one.com should be selected.
   • Port : 465 should be selected and verified.
   • Encryption : SSL/TLS should be selected.
   • Secure Password Authentication (SPA) : This option should be disabled.
4. Once everything matches the settings shown above, click Next to confirm the changes.

Method 5: Check Internet Connection

Make sure your Internet connection is not having problems. You can also try resetting your network using these simple instructions. Remember, you will need your WiFi password to reconnect to the network!

1. Click the Internet icon on your taskbar, then select the network that says “No Internet, secured” .

2. If the Forget button is visible, click it. If you don't see the button, you can also try opening Network & Internet settings and looking for it there.

3. If you are using Ethernet, make sure to unplug the cable from your computer. If so, enable Airplane mode and restart your device.

4. After restarting your computer, turn off Airplane mode and plug the Ethernet cable back in. Reconnect to your network and see if you still get the same error message in Outlook.

Method 6: Temporarily turn off antivirus applications

Sometimes your antivirus application may detect other applications as "problematic," meaning it incorrectly identifies a harmless program as malware. In this case, you may need to temporarily disable your antivirus application and then use Outlook.

1. Right-click an empty space on the taskbar and select Task Manager from the context menu.

2. Switch to the Start-up tab using the header menu located at the top of the window. Here, find your antivirus application from the list and select it.

3. Click on the Disable button that appears at the bottom right of the window. This will disable the app from launching when you boot your device.

4. Restart your computer and see if you can use Outlook without errors after making the changes. Don't forget to turn your antivirus back on after the process is finished!

Method 7: Reinstall Outlook

In case none of the above methods work, you can try reinstalling Outlook completely to fix any corrupt issues. Here is how to uninstall Outlook completely without leaving any files behind, so you can reinstall Outlook cleanly:

1. Press the Windows key + R on your keyboard. This will bring up the Run utility.

2. Type “appwiz.cpl” without the quotes and press the Enter key on your keyboard. This will launch the Control Panel application and take you straight to the Programs and Features page .

3. Scroll down the list of your installed programs and find the Outlook or Microsoft 365 app if you have Outlook for Office 365. Right-click on that program once and select Uninstall from the context menu.

4. Once the process is complete, simply reinstall Office 365 or the Outlook app if you have the perpetual version. Once you install the new version of Outlook, check to see if the 0x800CCC0E error still occurs.