Outlook error windows 10

Eric Leasner21 1 Reputation point
2022-01-31T02:59:27.073+00:00

New install. Running windows 10 and Office 365. Outlook works fine at first but within a few minutes it will not send, I get error “0x800CCC1A, your server does not support the connection encryption type you have specified”. But yet it works again once I restart the computer (but only for a few minutes, then stopped working). Any suggestions?

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Joy Zhang-MSFT 1,046 Reputation points
    2022-01-31T08:11:22.253+00:00

    Hi @Eric Leasner21 ,

    What is the type of your mail account, POP, IMAP or Exchange?

    If your have configured POP or IMAP account, you could make sure you have configured the correct port and Encryption. In general, the port for IMAP is 993, the port for POP is 995 and the port for SMTP setting is 465. (File>Account settings>Account settings>double-click the account>more settings>Advanced). For more details: POP, IMAP, and SMTP settings

    If above configuration have configured correctly and the error still occurs, you could try to run outlook in safe mode to check if there are some add-ins cause this issue. (windows + R>type "Outlook.exe /safe">enter)

    If all of above methods don't work for you, you could try to repair Outlook Data Files, the corrupted outlook date files also lead to this issue.

    In addition, Improper MS Outlook installation can cause this issue as well, please try to reinstall outlook client and check again.

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  2. Zenifer Smith 10 Reputation points
    2023-07-11T16:04:09.7166667+00:00

    To fix the Outlook error "0x800CCC1A, your server does not support the connection encryption type you have specified," you can try these steps:

    1. Double-check your email settings in Outlook. Make sure you've selected the right encryption type (like SSL/TLS) and that the server settings match what your email provider needs.
    2. Keep your Outlook and Windows 10 up to date. Installing the latest updates for both can help solve compatibility issues that might be causing the error.
    3. Temporarily turn off your antivirus or firewall software to see if they're blocking the connection. If the error disappears when they're disabled, you can adjust the settings or add Outlook as an allowed program.
    4. Try accessing your email using a different email client or webmail. If you still encounter the same problem on different clients, it's worth reaching out to your email provider as it may be a server issue they need to address.

    Give it a try and let me know if these steps helped you.

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