Error Code: 800CCC0F
Error message:
Your server has unexpectedly terminated the connection
A possible cause of error 800CCC0F is if you have "Log on using Secure Password Authentication" selected.
In Windows Live Mail, check your e-mail account's settings (as follows):
1. Open Windows Live Mail (WLM).
2. In the left-hand pane (i.e. the folders pane), right-click on
the name of your e-mail account (e.g. yourname @hotmail.com).
3. Click on 'Properties'.
4. Click on the 'Servers' tab.
If you have "Log on using Secure Password Authentication" selected, that is the source of your troubles.
Few public mail servers support or require that. De-select it by clicking on "Log on using clear text authentication" instead. Your password is still safe, because it's passed through a secure TLS tunnel, by virtue of you selecting "This server requires a secure connection (SSL)" on the 'Advanced' tab.
Save the new settings, then re-start Windows Live Mail.
Alternatively, error 800CCC0F can occur if your e-mail service provider is now requiring that you connect to it using OAUTH (or XOAUTH2) authentication.
Windows Live Mail does NOT support the OAUTH or XOAUTH2 protocols.
To access a service that uses either of those protocols, open the e-mail service's website in a browser, sign-in to your account, then enable the option "Allow less secure apps...".
That is to say, when you change it (on their website), so that their service no longer uses the default setting (OAUTH or XOAUTH2), Windows Live Mail will begin working again.
I'm seeing reports which suggest Yahoo now uses only OAUTH, nothing else: so OAUTH is now the only option, not the default option. Windows Live Mail can't use OAUTH, so, if the reports are correct, the only way to continue using Windows Live Mail is to move to a service that's not Yahoo (e.g. Hotmail/Outlook or Gmail).
Alternatively, error 800CCC0F can be caused by:
1) Incorrect IMAP or POP3 settings (usually the SSL option for SMTP), or
2) A firewall blocking the port.
Firstly, open Windows Live Mail and see if there is an e-mail stuck in the Outbox (which, if present, will block ALL outgoing messages). If so, delete that e-mail. You may need to go offline to do this: click on "Work Offline" in WLM: Home > Work Offline
Secondly, re-configure your e-mail account as follows -
A. If you have an IMAP account: replace the current (incorrect) settings with the correct IMAP settings, as shown on the website of your e-mail service provider.
B. If you have a POP3 account: replace the current (incorrect) settings with the correct POP3 settings, as shown on the website of your e-mail service provider; and see also paragraph D, below.The IMAP and POP3 settings are found in WLM at the following location: right-click on the name of your e-mail account (e.g. yourname @hotmail.com). Then click on 'Properties'. There are 5 tabs shown if your account is an IMAP account. There are 4 tabs shown if your account is a POP3 account.
Thirdly, disable your security software, your firewall, and your anti-virus program (for testing purposes).
Then open this link:
Alternatively, error 800CCC0F can occur because it's impossible to connect to an IMAP server using the POP3 protocol, and it's impossible to connect to a POP3 server using the IMAP protocol.
Your e-mail account is wrongly configured if the server you mentioned is an IMAP server but your WLM account uses POP3, or if the server you mentioned is a POP3 server but your WLM account uses IMAP.
First, find out whether your WLM account is IMAP or is POP3:
1. Open Windows Live Mail (WLM). In the left-hand pane (i.e. the folders list), right-click on the name of your e-mail account (e.g. yourname @hotmail.com). Then click on 'Properties'.
2. If there are 5 tabs shown, and the 5th tab is labelled 'IMAP', your account is an IMAP account and therefore must use only IMAP settings. If there are only 4 tabs shown, and the 'IMAP' tab is missing, your account is a POP3 account and therefore must use only POP3 settings.
Second, find out whether your WLM account is correctly configured, i.e. that it is using *only* IMAP settings (if it's an IMAP account), or *only* POP3 settings (if it's a POP3 account). Those settings are shown on the website of your e-mail service provider.
If your WLM account is wrongly configured, you have these 4 options (choose one of them) -
A. If you have an IMAP account: replace the current (incorrect) settings with the proper IMAP settings shown on the website of your e-mail service provider.
B. If you have a POP3 account: replace the current (incorrect) settings with the proper POP3 settings shown on the website of your e-mail service provider. See also paragraph D, below.
C. Switch to using IMAP (if you have a POP3 account):
You can't just change the account type to IMAP, you have to add an IMAP account in WLM, and then remove the unwanted POP3 account from WLM.
1. Right-click on the existing account name in the folder pane, then select "Properties".
On the "General" tab, deselect "Include this account when receiving mail or synchronizing",
then click "Apply", then click "OK". This ensures that the account folders will remain intact,
with their contents, during the transition.
2. When viewing your message list, press Ctrl+Shift+T to start the "Add your email account" wizard.
3. Enter your e-mail address, password, and a display name for outgoing messages.
4. Select "Manually configure server settings", then click "Next".
5. For the incoming server, select "IMAP" from the dropdown list.
For the incoming server address, type the IMAP server address
shown on the website of your e-mail service provider.
For the port number, type the IMAP port number shown on the
website of your e-mail service provider.
Select "Requires a secure connection (SSL)".
For "Authenticate using", select "Clear text" from the dropdown list.
For "Log-on username", enter your full e-mail address.
6. For the outgoing mail server address, type the SMTP server address
shown on the website of your e-mail service provider.
For the port number, type the SMTP port number shown on the website
of your e-mail service provider.
Select "Requires a secure connection (SSL)".
Select "Requires authentication".
7. Click "Next", then click "Finish".
The WLM program will connect and begin to download the account folders and their contents. This may take some time if there are a lot of folders and/or messages, and it may stall. Be patient.
D. Continue to use POP3 (if you have a POP3 account):
1. In WLM, right-click on the e-mail account's name in the left-hand pane (i.e. the folder pane), then select "Properties".
2. On the "Servers" tab -
"My incoming mail server is a" must say: POP3
Change "Incoming mail (POP3)" to the POP3 server addres shown on the website of your e-mail service provider.
Change "Outgoing mail (SMTP)" to the SMTP server address shown on the website of your e-mail service provider.
Ensure that "Email username" is your full e-mail address.
Select "Log on using clear text authentication".
Select "My server requires authentication".
3. On the "Advanced" tab -
Change the port number for Outgoing mail to the SMTP port number shown on the website of your e-mail service provider.
Change the port number for Incoming mail to the POP3 port number shown on the website of your e-mail service provider.
Select "This server requires a secure connection (SSL)" for BOTH outgoing (SMTP) and incoming (POP3) mail.
4. Click "Apply", then click "OK".
After doing option A, B, C or D you should check whether the WLM account is working as you want it to:
1. Remove any unsent messages from the Outbox (below the account folders, in the left-hand folder pane).
2. Compose a new test message, with a unique subject, and send it to yourself (i.e. from the account in question to the same account).
3. Post on this forum any new error message: click on an error message to select it; then use right-click to copy it; and use right-click again to paste it into the text entry box in your reply here.
