Microsoft KB Archive/318660

Knowledge Base

OL: "Server Has Unexpectedly Terminated the Connection" Error Message If You Start Outlook or Outlook Express

PSS ID Number: 318660

Article Last Modified on 6/5/2003

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The information in this article applies to:

• Microsoft Outlook Express 5.5 for Windows NT 4.0
• Microsoft Outlook Express 5.01 for Windows NT 4.0
• Microsoft Outlook Express 5.0 for Windows NT 4.0
• Microsoft Outlook Express 4.01 for Windows NT 4.0
• Microsoft Outlook Express 4.0 for Windows NT 4.0
• Microsoft Outlook Express 5.5 for Windows Millennium Edition
• Microsoft Outlook Express 5.5 for Windows 98 Second Edition
• Microsoft Outlook Express 5.01 for Windows 98 Second Edition
• Microsoft Outlook Express 5.0 for Windows 98 Second Edition
• Microsoft Outlook Express 5.5 for Windows 98
• Microsoft Outlook Express 5.01 for Windows 98
• Microsoft Outlook Express 5.0 for Windows 98
• Microsoft Outlook Express 5.5 for Windows 95
• Microsoft Outlook Express 5.01 for Windows 95
• Microsoft Outlook Express 5.0 for Windows 95
• Microsoft Outlook Express 4.01 for Windows 95
• Microsoft Outlook Express 4.0 for Windows 95
• Microsoft Outlook Express 5.5 for Windows 2000
• Microsoft Outlook Express 5.01 for Windows 2000
• Microsoft Outlook Express 6.0 for Windows 2000
• Microsoft Outlook Express 6.0 for Windows Millennium Edition
• Microsoft Outlook Express 6.0 for Windows 98 Second Edition
• Microsoft Outlook Express 6.0 for Windows 98
• Microsoft Outlook Express 6.0 for Windows NT 4.0
• Microsoft Outlook 2002
• Microsoft Outlook 2000

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This article was previously published under Q318660

SYMPTOMS

If you start any of the Microsoft products that are listed at the beginning of this article, you may receive the following error message:

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: '<account name>', Server:'<server>', Error Number: 0x800CCC0F

CAUSE

This behavior can occur if you are using a component of TREND Micro PC-cillin antivirus software that uses the Pop3trap.exe file.

WORKAROUND

To work around this behavior, disable the Post Office Protocol version 3 (POP3) Scan feature of the TREND Micro PC-cillin antivirus software:

1. Double-click the PC-cillin icon at the far right of the taskbar.
2. Click to clear the Enable POP3 Scan check box.
3. Reconfigure your POP3 e-mail account in Microsoft Outlook with the correct settings.
   
   For example, if the original POP3 server is "mailserver.com" (without quotation marks), and the user name is "username," (without quotation marks) the TREND Micro PC-cillin may have modified the settings as follows:

   Username: "username/POP3 server name"

   You may have to reconfigure your POP3 e-mail account in Outlook with the following settings:

   UserName: "username"

   Confirm these settings with your Internet Service Provider (ISP). For additional information about how to reconfigure your Internet e-mail account, click the article numbers below to view the articles in the Microsoft Knowledge Base:

   195578 OL2000: (IMO) How to Set Up Internet Mail Accounts

   195795 OL2000: (CW) Troubleshooting Outlook Configuration Problems

To resolve this issue, contact TREND Micro for information about how to enable the POP3 Scan feature. For information about how to contact TREND Micro, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:

65416 Hardware and Software Third-Party Vendor Contact List, A-K

60781 Hardware and Software Third-Party Vendor Contact List, L-P

60782 Hardware and Software Third-Party Vendor Contact List, Q-Z

MORE INFORMATION

For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:

312347 OLEXP: POP3 Information Does Not Change; Error Messages Appear

303645 OL2000: E-mail Account Settings Are Changed

REFERENCES

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

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