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Learn about email client error codes

Find info about specific email client error codes and how to troubleshoot them.


DETAILED INFO

Common email client error codes

Many common email errors are caused by the wrong email client settings. Check this list for detailed info.

Tip: If you're troubleshooting and can’t access your email program, you can use your currently.com email account to send and receive email.

Error codesInstructions
0x800CCC0D

0x800CCC15

0x800CCC67 (affects outgoing email only)
  • Make sure you can browse the Internet. If you can view webpages but can't send email, you may have the wrong mail server typed in your account, or the server may be down.
  • Check your email client settings to make sure they are correct.
  • Look for stuck email. In your email program (for example, Outlook Express or Outlook), look for any messages in your outbox. If you have stuck emails, remove those messages and try to send a new one.
  • Temporarily disable your firewall. To disable a software firewall on a Microsoft Windows operating system, find the icon for your firewall on your taskbar. Right-click on it and select Disable. Try sending and receiving email. If it works with your firewall disabled, you may need to adjust your your firewall settings. For help, refer to your firewall support documentation.
  • Temporarily disable your anti-virus software. To disable most anti-virus software on a Microsoft Windows operating system, find the icon for your anti-virus on your taskbar. Right-click on it and select Disable. Try sending and receiving email. If it works with your anti-virus disabled, you may need to adjust your anti-virus settings. For help, refer to the anti-virus manufacturer's support documentation.
  • Restart your computer and try again. If you still can't access your email but you have an internet connection, you can use your currently.com email account to send and receive email for now.
0x800CCC0E“The connection to the server has failed. Account: 'account name', Server: SMTP.att.yahoo.com, Protocol: SMTP, Port: 25, Secure(SSL): NO, Socket error: 10061”

AT&T has blocked port 25. Filtering port 25 cuts down the amount of spamming and viruses sent unknowingly by computers already infected by viruses. A single infected computer can send millions of email messages in only a few hours. This is a proactive effort by AT&T to help customers who received spam or a virus through email.
  • Verify your email client settings.
  • If you still can't access your email program but you have an internet connection, you can use your currently.com email account to send and receive email for now.
0x800CCC19Refer to the troubleshooting tips at the start of this table. You can also try these options:
  • Check for a large email. If there is one, it could be causing the program to time out while trying to download it. Delete the email and retry.
  • Check for stuck email. See if there are large emails saved in the inbox. You can either delete the emails or move them to a different folder.
  • Is the attachment that you are sending equal or larger than 25MB? Try to reduce the file size by saving it as a different file format (for images) or by using a third-party program that can compress files.
  • Move large files out of your inbox. If an email in your inbox is larger than 25MB, move it out of your inbox into another folder.
  • Restart your computer and try again.
0x800CCC90If you get the error 0x800CCC90 POP3 Response Error: Client response invalid:
  • Refer to the troubleshooting tips at the start of this table.
  • Delete and re-add the account in your email program, making sure the settings are correct.
  • Restart your computer and try again.
  • If these steps didn't work, contact the help desk for your email program. If you still can't access your email but you have an internet connection, you can use your currently.com email account to send and receive email for now.
0x800CCC92If you get the error 0x800CCC92 POP3 Invalid Password: Password not valid for account:
  • Check your Outlook Express settings and make sure your username and password are correct.
  • Reset the password to a different password and verify that you can check email.
  • Add your email account back to Outlook Express.
0x800CCC78The full text of this error message looks something like: “The message could not be sent because the server rejected the sender's email address. The sender's email address was (Email address). Subject (Subject), Account: (Account name), Server: (Server name), Protocol: SMTP, Server Response: '505 Authentication required', Port: 25, Secure(SSL): No, Server Error: 505, Error Number: 0x800CCC78.”

This error message means the SMTP server authentication feature is disabled in your email client. Check your email settings and enable this feature.
0x800CCC91If you get the error 0x800CCC91 POP3 Invalid Username: Invalid username or username not found:
  • Verify the username and password in the mail profile.
  • If the error still happens, it’s caused by your anti-virus program settings. Change your anti-virus program so it doesn’t scan all emails automatically.
0x80042108Refer to the troubleshooting tips at the start of this table. If these steps don't work, there may be an issue with your anti-virus software. Contact the manufacturer of your software for help.
0x8004210ARefer to the first four troubleshooting tips at the start of this table.
0x8004210BRefer to the troubleshooting tips at the start of this table. If you're using Outlook 2002, you'll need Service Pack 3 installed. You can go to Microsoft’s website to get the latest Service Pack for Outlook. Contact Microsoft if you need help with this.
0x800CCC0BMake sure you're only checking your email on one device. Then, refer to the troubleshooting tips at the start of this table.
0x800CCC95Verify your email client settings. If these steps don't work, try to delete and re-add your email account.

Additional steps

Verify your email client server settings
Check your email client settings to make sure you have the correct info.

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