How to resolve Windows Live Mail error 0x800CCC6F

You may get stuck sending emails in Outlook Express and get a server error 554. This Outlook 554 error occurs when you try to send a large number of emails to the same recipient or different users. In this article, I will tell you how to fix Outlook server error 554.

You may see the following error message on your screen:

Server Error: 554
Server reply: 554 Transaction failed: message could not be sent due to possible misuse; please visit for more information.
Server: `’.
Error Windows Live Mail ID: 0x800CCC6F
Protocol: SMTP
Port: 25
Secure (SSL): None

If you read the error message carefully, you will see that the ISP never allows unsolicited mail to be sent. If you try to do this, your ISP may block you for a limited time.

Windows Live Mail Server Error 554 0x800ccc6f is an error name that contains details about the error, including the cause of the error, the system component or application whose failure caused the error, and other information. The numeric code in the error name contains data that can be deciphered by the manufacturer of the faulty component or application.

An error with this code can occur in many different places in the system, so even if its name contains some details, it is still difficult for the user to find and fix the cause of the error without specialized technical knowledge or appropriate software.

What causes Windows Live Mail error 0x800CCC6F

What causes Windows Live Mail error 0x800CCC6F

If you get this error on your computer, it means that there is a problem with the operation of your system. Common causes include failed installation or removal of software that may have left invalid entries in the Windows registry, the effects of a virus or malware attack, improper system shutdown due to a power outage or other factors, accidental deletion of a required system file or registry entry by someone with limited technical knowledge, and a number of other causes.

The immediate cause of the “Windows Live Mail Server Error 554 0x800ccc6f” error is an incorrect execution of one of the common operations by a system component or application.

  • Virus: If your computer has recently been hit by a virus or malware, and you have cleaned it with a reliable anti-virus program, there may still be some damage. This damage can cause many problems, including Outlook Error 554 or 0x800CCC6F. A good computer tuner, such as Advanced System Repair Tool, can help you a lot in this situation.
  • Missing system components: Missing system files such as dll, exe, sys, inf, ocx, etc. may be deleted, damaged, or corrupted. In this situation, you will need an advanced system repair tool to solve this problem. This tool simply scans your entire PC and fixes all errors with one click.
  • Corrupted Office installation: Your Office installation may be damaged or broken. In this situation, MS Office repair can be a simple solution.
  • Limited server resources: Each server has limited resources. This can limit the maximum number of recipients you can send email to at one time. If you exceed the maximum number, your server may mark your IP as spam.

To fix Windows Live Mail error 0x800CCC6F

To fix Windows Live Mail error 0x800CCC6F

Use correct POP settings

In most documented cases, error 0x800CCC6F is due to an unsupported port on the SMTP server or the SSL option for SMTP. In this case, you should be able to solve the problem by changing the mail server settings to a port supported by the POP connection.

If the port setting is not effective, you should also try changing the access provider for outgoing SMTP mail and see if that solves the problem. If you don’t know how to change the mail server settings used by Windows Live Mail, follow the instructions below:

  1. Open Windows Live Mail and make sure that you are logged into the mailbox that caused error 0x800CCC6F.
  2. Then click on File (on the top ribbon bar), then Settings -> Mail Accounts.
  3. In the Accounts window, select the problem account in the Mail category, then go to the right pane and click Properties.
  4. In the Properties window, click the Servers tab in the top pane and change the Outgoing Mail – SMTP setting to an alternative value provided by your mail company. Next, select the My server requires authentication checkbox and click Options.
  5. Once you are on the outgoing mail server, select the Use the same settings as my incoming mail server checkbox and click OK to save your changes.
  6. When you return to the main properties window, select the Advanced tab and change the outgoing mail server (SMTP) to a different port.

Whitelist the SMTP port or remove the third-party firewall

Another common cause of error 0x800CCC6F is an overprotected firewall that interferes with the port used by the email service provider. Note that this behavior is not reported by the Windows firewall – which has been known to let mail ports through without any problem (unless you specifically force it to block them).

However, some third-party antivirus sites have been known to block some of them if they detect suspicious activity this would even be the case with a TLD. If this scenario applies, the most elegant solution would be to access the firewall settings and allow the SMTP port used by your email account.

But as you can imagine, the steps you need to take vary depending on the third-party security package you use. If you can’t (or don’t want to) whitelist that port, the only way to make sure the third-party AV isn’t blocking it is to remove the security package completely. If you decide to go this route, follow the instructions below:

  1. Open the Run dialog box by pressing the Windows + R key. Then type “appwiz.CPL” and press Enter to open “Programs and Features”.
  2. While in the “Programs and Features” window, scroll through the list of applications and find your firewall. Select it and click Uninstall in the pop-up menu that appears.
  3. Follow the instructions on the screen to complete the uninstallation process.
  4. After removing the third-party firewall, restart your computer and then try sending email through the Windows Live Mail client again after the next boot.

Clear the “Outbox” folder in Windows Live Mail

The error message 0x800CCC6F is essentially a failure of several attempts to send an email. However, it may not be about the last email you tried to send – it was probably delivered.

But the error could be caused by the fact that you have an old email that can’t be sent and is in your outbox. Windows Live Mail will continue to send the error message until you manage to clear the queue in your Outbox.

If this script applies, follow these instructions to delete blocked emails from the Outbox in Windows Live Mail:

  1. Open Windows Live Mail and click Home on the top ribbon bar. Then under Tools, click Work offline and confirm.
  2. Once the offline mode is enabled, go to the View tab on the same ribbon and select Compact View.
  3. In Compact view, click the email icon at the bottom of the folder list (top left pane).
  4. Then click Outbox in the items list to open the Outbox folder.
  5. Right-click the blocked message that you want to delete, and then click Delete in the new pop-up menu that appears to clear the Outbox folder.
  6. Restart the Windows Live Mail application and see if the problem is fixed.

Turning off your router/modem

  1. To do this, simply press the power button on the back of the router to turn off the power, then unplug the power cord and wait at least 30 seconds to make sure the power capacitors are completely drained.
  2. After that time, plug the network device back into the wall outlet, turn it off, and wait for Internet access to be restored.
  3. Then repeat the action that caused error 0x800CCC6F and see if the problem is resolved.

Frequently Asked Questions

  1. Change your ports.
  2. Temporarily disable your third-party antivirus solution.
  3. Scan your computer for malware.
  4. Uninstall and reinstall Windows Live Mail
  5. Troubleshoot network issues
  6. Reinstall network adapter driver
  7. Update the network adapter driver
  8. Try using Windows Live Mail with a different Windows account.

Go to Windows Live Mail and open the Accounts tab -> Properties -> Advanced... Enter 465 in the "Inbox" field and make sure the box is checked. 465 is the default SMTP port for secure, authenticated outgoing mail. No mail server will deliver incoming mail through port 465.

  1. Click the Start button (the circular button with the Windows logo on it).
  2. Click Control Panel.
  3. Click on Programs.
  4. Click Programs and Features.
  5. Find Windows Live Essentials and double-click it.
  6. Click Restore all Windows Live programs.

  1. Open the Windows Live Mail program.
  2. Select the Home tab in the upper-right corner of Windows Live Mail.
  3. Click the Outbox button on the left side of the page. Find the emails that are not being sent.
  4. After you resend the email, you can delete it in your Outbox. The error will disappear after you delete the sent message.