You see error 0x800CCC0D when Outlook cannot connect to send or receive email. This error means Outlook cannot locate your email server using the settings in your account. It is often caused by incorrect server names, network problems, or security software. This article provides the steps to diagnose and resolve the connection failure.
Key Takeaways: Fixing Outlook Error 0x800CCC0D
- Account Settings > Server Settings: Verify and correct the incoming and outgoing mail server names provided by your email provider.
- Windows Security > Firewall & network protection: Check if Windows Defender Firewall is blocking Outlook’s connection to the internet.
- Control Panel > Internet Options > Advanced > Reset: Restores Windows Internet settings to default, which can fix underlying network configuration problems.
Why Outlook Cannot Find Your Email Server
Error 0x800CCC0D is a network connection error. Outlook uses the server addresses in your account settings to communicate with your email provider. If those addresses are wrong, or if something on your computer blocks the connection, the operation fails.
Common causes include typing mistakes in server names, using outdated settings from an old provider, or a recent password change that requires updated authentication. Your internet connection might be unstable, or a firewall could be preventing Outlook from accessing the necessary ports.
How Server Discovery Works
For Microsoft 365 or Outlook.com accounts, Outlook often uses AutoDiscover to find server settings automatically. For other accounts like POP3 or IMAP, you must enter the server names manually. Error 0x800CCC0D frequently appears with manual setups where the server information is incorrect.
Steps to Resolve the Email Server Error
Follow these steps in order to identify and fix the cause of error 0x800CCC0D.
- Verify Your Internet Connection
Open a web browser and visit a website like outlook.com. If the page does not load, restart your router or modem. A working internet connection is required for Outlook to reach your email server. - Check Your Account Server Settings
In Outlook, go to File > Account Settings > Account Settings. Select your email account and click Change. Carefully review the Incoming mail server and Outgoing mail server fields. Compare them to the correct settings listed on your email provider’s support website. - Update Your Email Password
In the same account settings window, re-enter your current email password in the Password field. Click Next to test the settings. If your password recently changed, this step updates Outlook’s stored credentials. - Temporarily Disable Third-Party Firewall and Antivirus
Security software can sometimes block Outlook. Open your antivirus or firewall application and turn off email scanning or its firewall feature for one minute. Try sending an email in Outlook to see if the error is gone. Remember to re-enable the protection afterward. - Reset Windows Internet Settings
Press Windows key + R, typeinetcpl.cpl, and press Enter. Go to the Advanced tab and click the Reset button. Check the box for Delete personal settings and click Reset. This clears corrupted network configurations that can interfere with Outlook. - Repair Your Outlook Data File
Close Outlook. Open the Control Panel and go to Mail > Show Profiles. Select your profile and click Properties. Then click Data Files, select your account, and choose Settings. Click the Repair button to check for file corruption that might cause connection issues.
If Error 0x800CCC0D Persists
Outlook Still Cannot Connect After Verifying Settings
Contact your email provider’s support team. Give them the exact error message and ask them to confirm the correct server names, port numbers, and encryption method for your account type. They can also check if there is an outage affecting their servers.
Error Occurs Only When Sending Email
The problem may be with your outgoing SMTP server settings. Ensure the Outgoing server requires authentication box is checked. This setting is in File > Account Settings > select account > Change > More Settings > Outgoing Server tab.
Connection Works on One Network But Not Another
Your workplace or public Wi-Fi network may block standard email ports. Try changing the port number for your outgoing SMTP server. Common alternatives to port 25 are 587 or 465. Your email provider must support the port you choose.
Manual Setup vs. Automatic Configuration
| Item | Automatic Configuration (AutoDiscover) | Manual Configuration |
|---|---|---|
| Best For | Microsoft 365, Exchange, Outlook.com accounts | POP3, IMAP accounts from other providers |
| Setup Complexity | Usually just email and password | Requires entering server names, ports, encryption type |
| Error 0x800CCC0D Frequency | Less common, often related to network or credentials | More common, often due to incorrect server info |
| Primary Fix | Repair Office, update credentials, check network | Verify and correct server settings from provider |
You can now send and receive email again after fixing the server connection. Always double-check server names with your provider to prevent this error. For advanced control, use the Test Account Settings feature in Outlook’s account settings menu to get a detailed log of the connection process.