Outlook errors

When Outlook Express fails to send or receive email it will usually tells you why on the error tab of the progress window (see figure1). You can't always tell what has gone wrong from the message, instead you may need to refer to the error number that is noted at the end of the log.

Figure1 - Showing where to find the Error Number

Provided below is a list of the most common error numbers, along with a description of the problem they represent.

General Errors - Problems with the Outlook Express Application
Error Number	Error Type	Description
0x800CCC00	LOAD_SICILY_FAILED	Authentication did not load
0x800CCC01	INVALID_CERT_CN	Invalid certificate content
0x800CCC01	INVALID_CERT_DATE	Invalid certificate date
0x800CCC03	ALREADY_CONNECTED	User already connected
0x800CCC04	CONN	N/A
0x800CCC05	NOT_CONNECTED	Not connected to server
0x800CCC06	CONN_SEND	N/A
0x800CCC07	WOULD_BLOCK	N/A
0x800CCC08	INVALID_STATE	N/A
0x800CCC09	CONN_RECV	N/A
0x800CCC0A	INCOMPLETE	Message download incomplete
0x800CCC0B	BUSY	Server or incorrect domain on sender's email address
0x800CCC0C	NOT_INIT	N/A
0x800CCC0D	CANT_FIND_HOST	Cannot locate server
0x800CCC0E	FAILED_TO_CONNECT	Cannot connect to server
0x800CCC0F	CONNECTION_DROPPED	Connection closed
0x800CCC10	INVALID_ADDRESS	Address not known on server
0x800CCC11	INVALID_ADDRESS_LIST	Mailing list not known on server
0x800CCC12	SOCKET_READ_ERROR	Unable to send Winsock request
0x800CCC13	SOCKET_WRITE_ERROR	Unable to read Winsock reply
0x800CCC14	SOCKET_INIT_ERROR	Unable to initialize Winsock
0x800CCC15	SOCKET_CONNECT_ERROR	Unable to open Windows Socket
0x800CCC16	INVALID_ACCOUNT	User account not recognized
0x800CCC17	USER_CANCEL	User cancelled operation
0x800CCC18	SICILY_LOGON_FAILED	Logon attempt failed
0x800CCC19	TIMEOUT	Timeout
0x800CCC1A	SECURE_CONNECT_FAILED	Unable to connect using SSL

POP3 Errors - Problems receiving mail
Error Number	Error Type	Description
0x800420CB	POP3_NO_STORE	Mail cannot be stored on server
0x800CCC90	POP3_RESPONSE_ERROR	Client response invalid
0x800CCC91	POP3_INVALID_USER_NAME	Invalid user name or user not found
0x800CCC92	POP3_INVALID_PASSWORD	Password not valid for account.
0x800CCC93	POP3_PARSE_FAILURE	Unable to interpret response.
0x800CCC94	POP3_NEED_STAT	STAT Command required.
0x800CCC95	POP3_NO_MESSAGES	No messages on server.
0x800CCC96	POP3_NO_MARKED_MESSAGES	No messages marked for retrieval.
0x800CCC97	POP3_POPID_OUT_OF_RANGE	Message ID out of range.

SMTP Errors - Problems sending mail
Error Number	Error Type	Description
0x800CCC60	SMTP_RESPONSE_ERROR	Invalid response.
0x800CCC61	SMTP_UNKNOWN_RESPONSE_CODE	Unknown error code.
0x800CCC62	SMTP_500_SYNTAX_ERROR	Syntax error returned.
0x800CCC63	SMTP_501_PARAM_SYNTAX	Parameter syntax incorrect.
0x800CCC64	SMTP_502_COMMAND_NOTIMPL	Command not implemented.
0x800CCC65	SMTP_503_COMMAND_SEQ	Improper command sequence.
0x800CCC66	SMTP_504_COMMAND_PARAM_NOTIMPL	Command not implemented.
0x800CCC67	SMTP_421_NOT_AVAILABLE	Command not available.
0x800CCC68	SMTP_450_MAILBOX_BUSY	Mailbox is locked and busy.
0x800CCC69	SMTP_550_MAILBOX_NOT_FOUND	Mailbox not found.
0x800CCC6A	SMTP_451_ERROR_PROCESSING	Error processing request.
0x800CCC6B	SMTP_551_USER_NOT_LOCAL	User mailbox is known, but mailbox not on this server.
0x800CCC6C	SMTP_452_NO_SYSTEM_STORAGE	No space to store messages.
0x800CCC6D	SMTP_552_STORAGE_OVERFLOW	Storage limit exceeded.
0x800CCC6E	SMTP_553_MAILBOX_NAME_SYNTAX	Invalid mailbox name syntax.
0x800CCC6F	SMTP_554_TRANSACT_FAILED	Transaction failed.
0x800CCC78	SMTP_REJECTED_SENDER	Unknown sender. ( incorrect e-mail address in the Reply-To field.)
0x800CCC79	SMTP_REJECTED_RECIPIENTS	Server rejected recipients.
0x800CCC7A	SMTP_NO_SENDER	No sender address specified.
0x800CCC7B	SMTP_NO_RECIPIENTS	No recipients specified.

 

NNTP Errors - USENET/Newsgroup Problems
Error Number	Error Type	Description
0x800CCCA0	NNTP_RESPONSE_ERROR	News server response error.
0x800CCCA1	NNTP_NEWGROUPS_FAILED	Newsgroup access failed.
0x800CCCA2	NNTP_LIST_FAILED	LIST command to server failed.
0x800CCCA3	NNTP_LISTGROUP_FAILED	Unable to display list.
0x800CCCA4	NNTP_GROUP_FAILED	Unable to open group.
0x800CCCA5	NNTP_GROUP_NOTFOUND	Group not on server.
0x800CCCA6	NNTP_ARTICLE_FAILED	Message not on server.
0x800CCCA7	NNTP_HEAD_FAILED	Message header not found.
0x800CCCA8	NNTP_BODY_FAILED	Message body not found.
0x800CCCA9	NNTP_POST_FAILED	Unable to post to server.
0x800CCCAA	NNTP_NEXT_FAILED	Unable to open next message.
0x800CCCAB	NNTP_DATE_FAILED	Unable to display date.
0x800CCCAC	NNTP_HEADERS_FAILED	Unable to display headers.
0x800CCCAD	NNTP_XHDR_FAILED	Unable to display MIME headers.
0x800CCCAE	NNTP_INVALID_USERPASS	Invalid user or password.

IMAP Errors - Problems using IMAP services
Error Number	Error Type	Description
0x800CCCD1	IMAP_LOGINFAILURE	Login failed.
0x800CCCD2	IMAP_TAGGED_NO_RESPONSE	Message tagged.
0x800CCCD3	IMAP_BAD_RESPONSE	Invalid response to request.
0x800CCCD4	IMAP_SVR_SYNTAXERR	Syntax error.
0x800CCCD5	IMAP_NOTIMAimap">0x800CCCD6	IMAP_BUFFER_OVERFLOW	Buffer limit exceeded.
0x800CCCD7	IMAP_RECVR_ERROR	Recovery error.
0x800CCCD8	IMAP_INCOMPLETE_LINE	Incomplete data.
0x800CCCD9	IMAP_CONNECTION_REFUSED	Connection not allowed.
0x800CCCDA	IMAP_UNRECOGNIZED_RESP	Unknown response.
0x800CCCDB	IMAP_CHANGEDUID	User ID has changed.
0x800CCCDC	IMAP_UIDORDER	User ID command failed.
0x800CCCDD	IMAP_UNSOLICITED_BYE	Unexpected disconnect.
0x800CCCDE	IMAP_IMPROPER_SVRSTATE	Invalid server state.
0x800CCCDF	IMAP_AUTH_NOT_POSSIBLE	Unable to authorize client.
0x800CCCE0	IMAP_OUT_OF_AUTH_METHODS	No more authorization types.

RAS/DUN Error - Problems communicating with dialup/network system
Error Number	Error Type	Description
0x800CCCC2	RAS_NOT_INSTALLED	RAS/DUN not installed.
0x800CCCC3	RAS_PROCS_NOT_FOUND	RAS/DUN process not found.
0x800CCCC4	RAS_ERROR	RAS/DUN error returned.
0x800CCCC5	RAS_INVALID_CONNECTOID	Connectoid damaged or missing.
0x800CCCC6	RAS_GET_DIAL_PARAMS	Error getting dial settings.

Winsock Errors - Problems encountered between Outlook Express and Operating system.
Error Number	Error Type	Description
0x800CCC40	WINSOCK_WSASYSNOTREADY	Network subsystem is unusable.
0x800CCC41	WINSOCK_WSAVERNOTSUPPORTED	Windows Sockets cannot support this application.
0x800CCC42	WINSOCK_WSAEPROCLIM	N/A
0x800CCC43	WINSOCK_WSAEFAULT	Bad address.
0x800CCC44	WINSOCK_FAILED_WSASTARTUP	Unable to load Windows Sockets.
0x800CCC45	WINSOCK_WSAEINPROGRESS	Operation now in progress.

 

0x800CCC00 - Authentication did not load

1. Reboot your computer and try again.
2. Check Service Status for mail problems.
3. Setup a new account in Outlook Express, re-entering your mail connection details. It is possible that your account has become corrupt. [Top]

0x800CCC01 - Invalid certificate content. / 0x800CCC02 - Invalid certificate date

Digital certification of encrypted emails can not be verified. Either your digital certificate is out-of-date or has been revoked. Get your certificate re-issued by your authority server or try recreating your mail profile. [Top]

0x800CCC03 - User already connected

The mailserver believes that you are already logged into your mailbox:

1. Close all connections on all machines and wait 20 minutes to check again.
2. If you are not logged in on another computer then someone may be using/downloading from your account, or something is wrong with your account.
3. If the problem continues, recreate your mail profile. [Top]

0x800CCC05 - Not connected to server

Outlook Express can't talk to the mailserver.

1. Check you are connected to the Internet (view a webpage). If you are connected, double-check your mailserver address.
2. If you can't view webpages, re-connect and try again. [Top]

0x800CCC0A - Incomplete

1. This is a possible corruption of the pop3uidl file (which records what emails have been downloaded). Close your internet connection and all programs. Search for the file' pop3uid.dbx' and rename it to 'pop3uid.xxx'. Reconnect and try again.
2. If this doesn't work, reboot and try again.
3. It is possible that the mail waiting on the mailserver have been corrupted. This could be caused by a large file attachment, mail missing headers or broken in transit. For Pop3 mail you be view the contents of your mailbox by using Webmail. may be able to identify the problem and delete the email causing the problem. Your mail should then function properly. [Top]

0x800CCC0B - Server busy or incorrect domain on sender's email address

1. The mailserver may be slowing down because of heavy email traffic. Wait 5 minutes and try again.
2. If the problem continues check the service status page to see if there is a known problem with email service.
3. Check your email settings and make sure you are using the correct format for your email address. [Top]

0x800CCC0D - Cannot locate server

Outlook Express can't see the mailserver.

1. Check you are connected to the Internet (view a webpage). If you are connected, double-check your mailserver address.
2. If you can't view webpages, re-connect and try again. [Top]

0x800CCC0E - Cannot connect to server

Outlook Express can't talk to the mailserver.

1. Check you are connected to the Internet (view a webpage). If you are connected, double-check your mailserver address.
2. If you can't view webpages, re-connect and try again. [Top]

0x800CCC0F - Connection closed

Your modem/network was disconnected. If this happens often with dialup, there may be noise on your phone line, you may need updated modem drivers, or an init string. With a network (broadband etc) the problem may be with your network hardware or drivers. [Top]

0x800CCC10 - Address not known on server

Outlook Express can't deliver an email because the address appears invalid. Check your spelling of the address and try again. You will need to delete the old message from your outbox to stop the error from repeating whenever you try and send. [Top]

0x800CCC11 - Mailing list not known on server

Outlook Express can't deliver to a mailing list, possibly because one of the email addresses isn't valid (check the spelling). Lots of mailing lists have restricted access, make sure that you are properly subscribed. [Top]

0x800CCC12 / 0x800CCC13 / 0x800CCC14 / 0x800CCC15 - Winsock problems

This error usually means that a glitch has appeared in your network protocols which is making it impossible for Outlook Express to transmit data over the network. A common fix is to re-install TCP/IP. Sometimes just re-booting will get things running again. [Top]

0x800CCC16 - User account not recognized

1. This error means that your username or password are wrong. Check they are right.
2. If they are not wrong, try setting up another identity with the same details. Sometimes accounts become corrupted, creating a new copy of your email account will fix the problem. [Top]

0x800CCC17 - User cancelled operation

This error occurs as a result of you pressing cancel during the sending and receiving of email. You may do this if it looked like the process had become jammed or was timing out. If this problem continues, the file 'pop3uidl.dbx' that logs which emails have been received may have become corrupt. You can do a search for the file and rename it 'pop3uidl.xxx'. Then reboot your system and try again. [Top]

0x800CCC18 - Logon attempt failed

This simply means that Outlook Express was rejected when it tried to connect to your mailbox. 1 Check your account information (username, password, mailserver addresses) 2 Make sure your account is still active (try and login to the portal and check your mail using the Webmail tool) [Top]

0x800CCC19 - Timeout

This error may be the result of a temporary glitch. try rebooting your system and trying again. If this problem continues, the file' pop3uidl.dbx' that logs which emails have been received may have become corrupt. You can do a search for the file and rename it 'pop3uidl.xxx'. Then reboot your system and try again. [Top]

0x800CCC1A - Unable to connect using SSL

This error indicates a problem connecting using the Secure Socket Layer. Simply turn off SSL in the Outlook Express settings. [Top]

General Errors - Applies to many of the errors on the above lists

The error may have been the result of an application error that may be fixed with a reboot. No further information is available though we recommend that you take a look at Microsoft's Knowledge Base regarding Outlook Express problems. [Top]

POP3 (Post Office Protocol 3) Errors

Problems that occur with POP3 affect the download of your latest emails. These problems occur, either because of a temporary glitch, file corruption, or because your account details are incorrect.

Checking your connection details are correct

Have you changed your account details recently? Make sure that you are not using CAPS LOCK while entering a case sensitive password. There is a quick way to check that you are using the right password and username, by connecting to the internet and using a programme called a telnet client.

Telnet is programme that allows you to access and talk to other computers, in this case you can pretend to be Outlook Express and talk directly to the mailserver. This will allow you to see if it's your email account or Outlook Express that is at fault. This should work with most versions of windows, although in Windows Vista you will need to add Telnet manually or download a different telnet program, such as Putty.

1. Click the Start button, then RUN.
2. In the RUN prompt, type 'cmd' (on Windows NT/2000/XP) or 'Command' on Windows 95/98/ME.
3. In the new window, type 'telnet mail.sovision.com 110' then click enter. Take care in your typing as you may not see what you type so its easy to make a mistake. If you do, its best to start again.
4. You should be connected to the mailserver - you should see the response "+OK Hello there" which confirms the mailserver is OK.
5. Type in 'user ' and hit the enter key (if your username was jsmith you would type 'user jsmith' ).
6. You will then get a message +OK Password required -type in 'pass<your password> and click the enter key (If your password was l3tmein you would type 'pass l3tmein') If it is correct, you will get an '+OK Well done' message. You are now in your mailbox and can be sure that your email account details are correct. [Top]

SMTP (Simple Mail Transfer Protocol) Errors

Problems that occur with SMTP affect your sending of emails. These problems can occur because of a temporary glitch (such as another programme blocking port 25, which is used by Outlook express to send emails. It is possible that the outgoing mailserver address is wrong. This is the first thing you should check.

Testing your access to port 25

You can check to see if your email is being blocked by using a telnet client. If you can connect to the outgoing mailserver on port 25, this will confirm that your problem mostly likely lies with the Outlook Express application, or your settings. To do the test:

1. Click the Start button, then RUN.
2. In the RUN prompt, type 'cmd' (on Windows NT/2000/XP) or 'Command' on Windows 95/98/ME.
3. In the new window, type 'telnet mail.sovision.com 25' then click enter. Take care in your typing as you may not see what you type so its easy to make a mistake. If you do, its best to start again.
4. You should be connected to the mailserver - you should see a response that begins with "220." which confirms the port 25 is open. If you don't get the "220" response, either the mailserver is not operating properly (check service status), you're not connected to the Internet or something on your system may be blocking port 25.

If you run your own mailserver and don't limit access to it, our network engineers may have blocked your access to port 25. You will be contacted by support if this happens. [Top]

NNTP (Network News Transfer Protocol) Errors

NNTP allows Outlook Express to function as a USENET (newsgroup) client. Problems with NNTP will mean that you either cannot post to newsgroups or are unable to download the latest posts. In most cases problems will be as a result of incorrect settings or a corrupt news posting. If there is a problem with USENET service, it will be indicated on the Service Status page. [Top]

IMAP (Internet Message Access Protocol) Errors

IMAP allows Outlook Express to store emails on the mailserver, allowing access to all your email, old and new from anywhere you can access email. Problems that occur with IMAP are mostly the same types of problems that occur with the more common POP3 mail system. If you were intentionally using the IMAP service, make sure that your settings are correct. Because IMAP stores all your emails on the mailserver it is possible that a corrupt email (often with large attachments etc) may be the cause of problems. If you think this has occured, raise a Question to support using Contact Us. Our network engineers will then investigate further. [Top]

RAS/DUN (Remote Access Server/ DialUp Network) Errors

RAS/DUN errors indicate problems with your dialup or network system. Outlook Express is tied to your dialup settings, so if you open it, while not online, it can either automatically connect, or give you the option to connect. You should check your connection settings within Outlook Express (Click Tools, Options, Connections, Change - to see your settings). [Top]

Winsock (Windows Socket/ Socket2) Errors

Winsock is the windows component that Outlook Express uses for all its TCP/IP (internet) communication. Winsock errors are usually caused by problems within the application/ operating system, sometimes as a result of bad configuration. They may be temporary in nature, vanishing on a reboot. They may be the result of a corruption within either Outlook Express or Windows. [Top]

More Help

Microsoft's Knowledge Base contains a lot of help for fixing Outlook Express problems. If you continue to experience problems with Outlook Express, it is a good place to look for assistance.

For further help and advice please use our general contact form or request a call back and we’ll call you.