Outlook Error Messages

Most common errors

0x800CCC00 - Authentication did not load
Solution: You can try with restarting your computer or creating a new account in your Outlook because the account is corrupted.

0x800CCC01 , 0x800CCC02 - Invalid Security Certificate for Incoming or Outgoing server
Solution: SSL Certificate of mail server is expired.

0x800CCC03,0x800CCC04 - User already connected
Solution: Quit all session that you have and wait 10-20 minutes or recreated the account in your email client.

0x800CCC05, 0x800CCC06, 0x800CCC07, 0x800CCC08, 0x800CCC09 - Not connected to server
Solution: Check your Internet connection or if you are connecting to the right mail server.

0x800CCC0A - Message download incomplete
Solution: pop3uidl file is corrupted. Quit your mail client, find pop3uidl.dbx and rename it.

0x800CCC0B - Server or maildrop is busy
Solution: Mail server is hight loaded, try after a few minutes OR try with this fix.

0x800CCC0D, 0x800CCC0E - Cannot connect to server
Solution:  Check your Internet connection or if your port is blocked.

0x800CCC0F - Connection closed
Solution: Check your Internet Connection, firewall or antivirus software.

0x800CCC10 - Address not known on the server
Solution: Check if the email of the person that you send an email is correct.

0x800CCC11 - Mailing list not known on the server
Solution: Check if the email of the person that you send an email is correct.

0x800CCC12, 0x800CCC13, 0x800CCC14, 0x800CCC15 - Unable to send Winsock request
Solution: Restart your computer or reinstall TCP/IP protocol

0x800CCC16 - User account not recognized
Solution: Check username and password of the account or readd it in your email client.

0x800CCC17 - User canceled operation
Solution: pop3uidl file is corrupted. Quit your mail client, find pop3uidl.dbx and rename it.

0x800CCC18 - Logon attempt failed

0x800CCC19 - Not available/Timeout
Solution: Check your Internet Connection, firewall or antivirus software.

0x800CCC1A - Unable to connect by using Secure Sockets Layer (SSL)
Solution: Upgrade or Operation system or SSL to be 2048bits key.

Simple Mail Transfer Protocol (SMTP) errors

Internet Message Access Protocol (IMAP) errors