Outlook Error 0x800CCC80: How to Fix None of the Authentication Methods Supported

You see error 0x800CCC80 when Outlook cannot send or receive emails. The error message states ‘None of the Authentication Methods Supported by this client are supported by your server.’ This happens because your email account settings do not match your provider’s security requirements. This article explains the cause and provides steps to update your authentication settings.

Why Outlook Shows the Authentication Error 0x800CCC80

Error 0x800CCC80 is an SMTP authentication failure. It occurs when your email provider, like Gmail, Yahoo, or your company server, requires a specific secure login method that is not configured in Outlook. Modern email services have deprecated older, less secure authentication protocols. If your Outlook account is set to use an outdated method like basic authentication over a plain connection, the server will reject the login attempt.

The error specifically points to a mismatch between client and server. Your ‘client’ is Outlook. The ‘server’ is your email provider’s mail system. Common triggers include a recent password change, a provider enforcing modern security like OAuth 2.0, or incorrect port and encryption settings. The fix involves aligning Outlook’s send and receive settings with your provider’s current specifications.

Prerequisites for the Fix

Before starting, gather your email account password. You may also need to generate an ‘app password’ if you use two-factor authentication on services like Gmail or Microsoft 365. Verify the correct incoming and outgoing server names and port numbers from your email provider’s support website. Having this information ready will make the configuration process faster.

Steps to Configure Correct Authentication in Outlook

Follow these steps to update your account settings. The exact menu names are from Outlook for Microsoft 365 and Outlook 2021. The process is similar in older versions.

1. Open Account Settings
   In Outlook, go to File > Info. Click on the Account Settings button, then select Account Settings again from the dropdown menu.
2. Edit Your Email Account
   In the Email tab of the Account Settings window, select your problematic email account. Click the Change button above the list of accounts.
3. Access More Server Settings
   In the Change Account window, click the More Settings button in the lower-right corner.
4. Enable Outgoing Server Authentication
   In the new dialog, go to the Outgoing Server tab. Check the box for ‘My outgoing server requires authentication’. Select ‘Use the same settings as my incoming mail server’. Click OK.
5. Update Advanced Port and Encryption Settings
   Go back to the More Settings dialog and click the Advanced tab. For the Outgoing server (SMTP), change the port number. Common secure ports are 465 or 587. For port 465, select SSL from the ‘Use the following type of encrypted connection’ dropdown. For port 587, select TLS. Click OK, then Next to test the settings.

Alternative Method: Using Specific Logon Credentials

If the above method fails, your provider may require unique credentials for the outgoing server.

1. Change Outgoing Server Logon Type
   Follow steps 1-3 to reach the More Settings dialog. On the Outgoing Server tab, select ‘Log on using’. Enter your full email address and password. Check ‘Remember password’.
2. Require Secure Password Authentication
   In the same dialog, you may need to check the box for ‘Require Secure Password Authentication’. This setting is less common but required by some older corporate servers. Try it if other fixes do not work.

If Outlook Still Has Issues After the Main Fix

Error Persists After Changing Settings

If error 0x800CCC80 continues, delete and recreate the email profile. Corrupted profiles can retain bad settings. Go to Windows Control Panel > Mail > Show Profiles. Remove the old profile, then create a new one and re-add your account with the correct server details.

Outlook Asks for a Password Repeatedly

Constant password prompts often indicate a need for modern OAuth 2.0 authentication. For Microsoft 365 or Outlook.com accounts, go to File > Account Settings > Account Settings. Select your account and click Change. In the dialog, if you see an ‘Update’ button for security, click it to migrate the account to modern authentication. For Gmail, you may need to use an app password instead of your regular password.

Emails Send but Fail to Receive

This points to an incoming server (IMAP/POP3) issue. Verify the incoming server port and encryption in File > Account Settings > More Settings > Advanced. Ensure the incoming server requires SSL or TLS as specified by your provider. The authentication method for the incoming server is usually set to ‘Use the same settings as my outgoing mail server’.

Authentication Method Comparison for Error 0x800CCC80

Item	Basic Authentication (Legacy)	Modern Authentication (OAuth 2.0)
Security Level	Low, uses username and password directly	High, uses access tokens without sharing password
Common Port & Encryption	Port 25 with None or STARTTLS	Port 465 with SSL or Port 587 with STARTTLS
Outlook Server Setting	My outgoing server requires authentication	May require clicking an ‘Update’ button in account settings
Typical Error Trigger	Server disables basic auth, causing 0x800CCC80	Outlook client is outdated and does not support OAuth
Best Use Case	Older private email servers	Gmail, Yahoo, Microsoft 365, Outlook.com

You can now resolve the 0x800CCC80 error by correcting authentication in your account settings. The key is enabling outgoing server authentication and using the correct secure port. If problems continue, try creating a new Outlook profile to ensure clean configuration. For advanced security, check if your email provider supports modern authentication and update your account in Outlook to use it.