Recognizing the Outlook Express Error

In order to understand what a particular MSOE error means, it is important to learn how to read an MSOE error message. The error message will appear in a dialog box and, usually, will not give the average user any real insight into the error that has occurred. Therefore, it is important to make a note of the error number, which is usually located at the end of the error message.

The remainder of this article will address MSOE problems by error number, as this is the most common ways to recognize a particular error.

General Errors

0x800CCC00: Authentication did not load

If you receive this error, reboot your computer and try to open the program again. Next, check “service status” for any mail problems. If the problem persists, it is possible that your mail account has become corrupt. Setup a new account in MSOE and re-enter your mail connection details.

0x800CCC01: Invalid certificate content or 0x800CCC02: Invalid certificate date

This error mans that the digital certification of your encrypted emails cannot be verified because your digital certificate is either out-of-date or has been revoked. Have your certificate re-issued or try recreating your mail account profile.

0x800CCC03: User already connected
This error means that the mail server believes that you are already logged into your mailbox. To correct, close all connections on all machines and wait about 20 minutes to reconnect. If you are not logged onto another computer then someone may be using your account or something may be wrong with the account. If this problem persists, recreate your mail account profile.

0x800CCC05: Not connected to server

This means that MSOE cannot communicate with the mail server. To correct this issue, be sure that you are connected to the Internet. If you are connected, double-check your mail server address. If you are not connected to the Internet, reconnect and try again.

0x800CCC0A: Incomplete

This error could possibly be the result of a corrupted pop3uidl file. To correct, close your Internet connection and all programs. Search for the file pop3uid.dbx and rename it pop3uid.xxx. Reconnect to the Internet and try loading MSOE again. If this does not work, reboot and try again.

If the pop3uidl is not the issue and the problem persists, it is possible that mail that is waiting in the mail server has been corrupted. This is often caused by a large file attachment or mail with missing headers. For Pop3 accounts, you may view the contents of your mailbox by accessing your mail via the Internet. This may allow you to identify the problem and delete the email that is causing the problem.

0x800CCC0B: Server or mail drop is busy

The mail server may be running slowly because of heavy email traffic. Wait 5 minutes and try again. If the problem continues, check the service status page to see if there is a known problem with the particular email service.

0x800CCC0D: Cannot locate server

To correct this issue, be sure that you are connected to the Internet. If you are connected, double-check your mail server address. If you are not connected to the Internet, reconnect and try again.

0x800CCC0E: Cannot connect to server

To correct this issue, be sure that you are connected to the Internet. If you are connected, double-check your mail server address. If you are not connected to the Internet, reconnect and try again.

0x800CCC0F: Connection closed

This error means that your modem or network was disconnected. If you access the Internet through a dial-up connection, there may be noise on your phone line and you may need updated modem drivers, or an init string. With other Internet connections, the problem may be with your network hardware or drivers.

0x800CCC10: Address not known on server

MSOE cannot deliver an email because the address is invalid. Check the spelling and format of the address and try again. You will need to delete the old message from your outbox to stop the error from repeating.

0x800CCC11: Mailing list not known on server

MSOE cannot deliver to a particular mailing list, possibly because one of the email addresses is invalid. Check the spelling and format of all addresses.

0x800CCC12 or 0x800CCC13 or 0x800CCC14 or 0x800CCC15: Winsock problems

This error usually means that there is a glitch in your network protocols. A common fix is to re-install your TCP/IP and sometimes a simple re-boot will correct the problem.

0x800CCC16: User account not recognized

This error usually means that your username and/or password are wrong. If they are correct, try setting up another identity with the same account details. If this works, the original account has been corrupted.

0x800CCC17: User canceled operation

This error occurs if you press cancel during the sending and receiving of email. If this problem continues, the file pop3uidl.dbx may have become corrupt. Search for the file pop3uid.dbx and rename it pop3uid.xxx. Reboot your system and reload MSOE.

0x800CCC18: Logon attempt failed

This error means that MSOE was rejected while attempting to connect to your mailbox. To correct this issue, verify your account information and make sure that the account is still active.

0x800CCC19: Timeout

This error is usually the result of a temporary glitch. Try rebooting your system and loading the program again. If the problem persists, the file pop3uidl.dbx may have become corrupt. Search for the file pop3uid.dbx and rename it pop3uid.xxx. Reboot your system and reload MSOE.

0x800CCC1A: Unable to connect using SSL

This error indicates a problem connecting using the “Secure Socket Layer” or “SSL”. To correct, turn off SSL in the Outlook Express settings.