Your server has unexpectedly terminated the connection error 0x800CCC0F

This guide will show you How to Fix Your server has unexpectedly terminated the connection error 0x800CCC0F.  When you attempt to send or receive email, you see one of the following error messages.

RECOMMENDED: Fix this issue in 3 simple steps. Takes only 2 minutes.
1) Download repair utility.
2) Install program and click Scan button.
3) Click Fix Errors button when scan is completed.
4) Restart your computer.

  • Task ‘server name – Sending and Receiving’ reported error (0x800ccc0f): ‘The connection to the server was interrupted. If this problem continues, contact the server administrator or Internet service provider (ISP). The server responded: ? K’.
  • “Your server has unexpectedly terminated the connection. Error Number: 0x800CCC0F”

This issue may occur if one of the following scenarios are true:

  • Your Outlook might be disconnected or not connected to Internet.
  • Incorrect configuration of Antivirus or Firewall software
  • Incorrect settings of Outlook mail account.
  • When your Outlook user profile is damaged.
  • If Outlook email item on your POP3 server is damaged.
  • When Outlook is removed or installation of Outlook is damaged.

How to fix Your server has unexpectedly terminated the connection error 0x800CCC0F?

Warning : Before making any changes in your computer, I suggest you to create a System Restore point  so that you can restore back your computer to previous working state if something goes wrong. Highly recommended to perform below resolutions steps by Professional Certified Experts, as it may corrupt your computer if you make any mistake.

Step 1: Make sure that you are connected to the Internet and able to telnet pop port number.

assets folding start collapsed To do this, follow these steps:

  1. Launch any browser on your computer. For example, start Internet Explorer, ping Google as ping
  2. Type one of the following addresses in the address bar, and then press Enter.
  3. Check for the proxy settings as well.

Step 2: Make sure that your Outlook email account settings are correct.

Quick Info: Go through this link to check email account settings in outlook.

We have listed some major Internet Service Providers settings (for manual configuration of Outlook).

We recommend that you contact your Internet service provider (ISP) for information about the exact incoming and outgoing mail server names and settings that you should use when you configure your Internet email account in Outlook. The list provided here contains information only for some Internet service providers in the United States and may not be up to date.

Incoming Mail (POP3) server names and settings:

Provider Name Server Name Port SPA SSL AuthRequird
AT&T Yahoo 995 OFF ON ON
Charter 110 OFF OFF ON
Comcast 995 OFF ON ON
Cox pop.[insert region] 110 OFF OFF OFF
Gmail 995 OFF ON ON
Juno 110 OFF OFF OFF
Microsoft Live 995 OFF ON ON
Netscape 110 OFF OFF ON
Netzero 110 OFF OFF ON
Pacbell 995 OFF ON ON
PeoplePC 110 OFF OFF ON
Qwest pop.[enter state ID] 110 OFF OFF OFF
Rogers 110 OFF OFF ON
SBCGlobal 995 OFF ON ON
Swbell 995 OFF ON ON
Verizon 110 OFF OFF ON
Yahoo 110 OFF OFF OFF

Outgoing Mail (SMTP) server names and settings:

Provider Name Server Name Port SPA AuthRequired Encryption
AOL 587 OFF ON None
AT&T Yahoo 465 OFF ON SSL
Charter 25 OFF ON None
Comcast 587 OFF ON TLS
Cox smtp.[insert region] 25 OFF OFF None
Gmail 587 OFF ON TLS
Juno 587 OFF OFF None
Microsoft Live 587 OFF ON TLS
Netscape 25 OFF OFF None
Netzero 25 OFF ON None
Pacbell 465 OFF ON SSL
PeoplePC 587 OFF ON None
Qwest pop.[enter state ID] 25 OFF OFF None
Rogers 587 OFF ON None
SBCGlobal 465 OFF ON SSL
Swbell 465 OFF ON SSL
Verizon 25 OFF ON None
Yahoo 25 OFF OFF None

Step 3: Check your antivirus manufacturer’s website for additional suggestions, disable the antivirus software and disable the firewall in router.

If the Outlook works fine after disabling the Anti-Virus software, highly recommended to uninstall the same using their removal tool and reinstall it.

List of manual Anti-Virus uninstallers

    1. Click the link associated with the antivirus software currently installed on your system and follow the prompts or instructions on the website.
    2. Once uninstallation is complete, you will need to restart your computer.
CA Antivirus see Total Defense Anti-Virus
Comodo Internet Security
Cyber Defender Early Detection Center
Dr. Web
(Only registered Dr. Web users can access support content)
FRISK F-PROT Antivirus for Windows
G Data
K7 Total Security
Microsoft Security Essentials
Norman Virus Control/Norman Security Suite
Norton (Symantec)
Norton Security Scan
Panda Cloud Internet Protection
Pareto Logic
Spybot Search & Destroy
Total Defense Anti-Virus (formerly CA Anti-Virus)
Trend Micro
Trend Micro Titanium
Trend Micro Worry-Free Business Security Agent
Vipre (Sunbelt Software)
Windows Defender
Windows Live OneCare
Windows Security Essentials
Zone Alarm

Step 4:  Create a new E-mail profile to fix error 0x800CCC0F.

To fix the Outlook send receive error 0x800ccc0f on your computer, you can try creating new Outlook profile. To perform the same, refer the below link.

How to create a new profile in Outlook?


If above steps did not help you to resolve the issues, you may have to create new outlook profile and reconfigure email settings. In addition, try creating new Windows user account as well. Hope this will help you to fix the issues. If the error remains same, you have to contact your ISP for further assistance. For further support, leave comments or ask more on Forum.

Arun Prabhakar

Arun Prabhakar immensely interested in following Windows and other technology developments. Being passionate Windows blogger, he loves to help others on fixing their computer issues.