Outlook Encryption Issue

Question

I'm attempting to receive and send e-mails through Outlook to and from [Moderator note: Personally Identifiable Information removed]@nc.rr.com. I'm getting the following error message: Receiving reported error (0x800CCC1A): Your server does not support this connection encryption type you have specified. Try changing the encryption method. Contract your mail server administrator or internet service provider (ISP) for additional assistance.

I have contacted my mail server administrator or internet service provider (ISP). They have confirmed that my e-mail service is working properly but the problem is with Outlook and Microsoft's e-mail servers.

Please advise.

Answer 1

Dear Sea Fox Holdings LLC,

This issue is usually caused by a mismatch between the account’s port and encryption settings in Outlook. Because nc.rr.com is a third-party POP/IMAP account, Outlook must use the exact server, port, and encryption values supplied by that email provider. Kindly try these steps:

Close Outlook, open Control Panel, search for Mail, and select Mail (Microsoft Outlook).

Select Email Accounts, highlight the nc.rr.com account, and select Change.

Verify the Incoming mail server, Outgoing mail server (SMTP), username, and password against the settings supplied by your provider.

Select More Settings, then open the Advanced tab.

Match each port with its corresponding encryption setting:

• POP commonly uses port 995 with SSL/TLS.
• IMAP commonly uses port 993 with SSL/TLS.
• SMTP commonly uses port 587 with STARTTLS/TLS. These are common secure combinations, but use the provider’s specific values rather than assuming they apply to nc.rr.com. It is confirms that port and encryption settings must be configured as matching pairs.

Open the Outgoing Server tab and select My outgoing server (SMTP) requires authentication, then select Use same settings as my incoming mail server.

Select OK, then Test Account Settings.

Here are some references:

• Set up email on other Internet-capable phones and tablets | Microsoft Support
• Change or update email account settings in Outlook for Windows | Microsoft Support
• How to update email settings in Outlook for PC | Microsoft Learn

Note:

Do not combine port 110 or 143 with SSL/TLS unless the provider explicitly directs you to do so. For secure connections, the commonly paired ports are POP 995 and IMAP 993.

If the provider specifies SMTP port 587, choose STARTTLS or TLS, not SSL/TLS, unless its documentation says otherwise.

Leave Log on using Secure Password Authentication (SPA) disabled unless the provider specifically requires it.

If two-factor authentication is enabled, the provider may require an app password instead of the normal account password.

If Outlook’s test still returns 0x800CCC1A, remove and re-add the account using File > Add Account > Advanced options > Let me set up my account manually, then enter the verified POP/IMAP and SMTP settings.

I hope the information shared helps point you in the right direction.

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