0x800cccof

Why do I Get Windows 0x800cccof Error Message?

Sounds like you are having problems sending and receiving emails on your computer using Outlook, Outlook Express or even Windows Mail in Vista.

Error 0x800CCCOF Connection to the Server was Interrupted

#1 - The most common reason for this error happening is due to an SMTP connection error. In plain english this means that your computer is trying to send and email but the remote email server that it is connecting too is refusing to accept it.

If you are connected to the Internet through ATT, and you attempt to send messages by using an account other than your ATT e-mail account, you may receive the 0x800cccof error message.

This behaviour can occur because ATT does not allow email messages to be sent to another Simple Mail Transfer Protocol (SMTP) email server while you are connected to their network.

...so make sure you are ONLY sending email using an account on the ATT network. To check this you will need to access the setup for the offending email account. It should have the SMTP server of your ISP and not that of any other. This sometime happens when you change provider but forget to change your email setup!

#2 - Try to increase the server timeout setting in your email software.

For instance in Outlook Express this would be:

Start Outlook Express
On the Tools menu, click E-mail Accounts.
Click View or change existing e-mail accounts, and then click Next.
Click your POP3 account, and then click Change.
Click More Settings.
Click the Advanced tab.
Gradually increase the server timeout setting

...other email software may be different to access the setting.

Error 0x800ccc0f while accessing secured (SSL) Newsgroup

You may be using a Windows Vista PC with Windows Mail to access your email and newsgroup messages.

Everything is OK except when you try and access some secured (SSL, port 563) news servers. When you try to download the newsgroup list on a server like this, you quickly get an error message saying the connection has been interrupted by the server
(protocol NNTP, port 563, SSL:1, code 0x800ccc0f).

The Reason:

Windows Mail uses newer SSL security than some old Newsgroup servers are using. Due to this difference the remote server shuts down the connection as it can't authenticate properly.

Either use Outlook Express on a Windows XP machine or wait until the newsgroup server gets an SSL update.

I hope this information helps your troubleshooting!

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