Summary: Outlook Error 0x800ccc0d is simply a failure to connect - that's in the error message. How to fix Outlook Error 0x800ccc0d involves a little investigation.
I am unable to get my e-mail from outlook express - I keep getting this error: 0x800ccc0d. What does it mean, and what do I do about it?
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Outlook and Outlook Express both report that error number when they can't find or connect to your mail server.
Understanding what's happening is fairly easy. Fixing requires some additional information.
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I'll focus here on Outlook Express, but similar steps are appropriate for Outlook as well.
Typically you'll see an error message much like this:

Unfortunately, many people seem to fixate on the error number at the end - 0x800ccc0d. While that can be useful, and it's easy to search on, they're missing all the additional information that Outlook is providing in the error. Specifically, this:
The host 'wrongmailserver.com' could not be found.
That's a big clue as to what's going on. Your email account is configured to retrieve email from the server 'wrongmailserver.com' (a fictitious server I made up for this example), and Outlook Express cannot connect to that mail server.
Step one? Make sure you can connect to anything else on the internet - any web page will do. Error 0x800ccc0d can occur because you're not connected to the internet at all, and visiting any random web page simply verifies that your internet connection is working.
If your internet connection is not working, that has nothing to do with Outlook, Outlook Express or error 0x800ccc0d. Your mail failure is just one symptom of not being connected to the internet.
If you are connected, step 2 is to validate your Outlook Express account configuration. Specifically, if you click on the Tools menu in Outlook Express, then click on the Accounts menu item, and then in the resulting dialog box click on the Mail tab, you should see something like this:

If you have more than one account, you may see multiple items in the list. Click on the one with which you are having trouble and click on Properties. In the resulting dialog box, click on the Servers tab and you should see something like this:

Note the arrows pointing at the two instances of the mail servers you would be using: one for POP3 (incoming email) and one for SMTP (outgoing email).
If the Incoming Mail (POP3): setting is wrong, then error 0x800ccc0d can result. In fact, the error message you got originally, "The host 'wrongmailserver.com' could not be found." is telling you that the mail server specified here could not be contacted.
So, what do you do?
I can't tell you what this setting should be, because it varies from ISP to ISP. What I use is different from what you use. So, you'll need to double check the information you were given from your ISP to see what they said your mail server name should be. Make sure you've entered that exactly. In fact, it probably makes sense to double check your entire configuration while you're here.
It's also possible that your mail server may simply be down - the ISP could be having trouble, for example, or the ISP could have changed mail servers. You'll need to contact your ISP to determine if this is the case, and whether or not they have an alternative mail server you can use, or how long you might need to wait for things to be fixed.
Related:
What is POP? Or POP3? Or a POP account? And what about SMTP? POP, POP3 and SMTP are all acronyms that you might see used when talking about configuring email. We'll look at what they mean, and how they relate.
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Article C2796 - September 26, 2006
See my commet above. Yes, it was the ISP server, they had not correctly configured access (gatway!) by DHCP. Your comment "simply a failure to connect" helped a whole lot, because it made me go on and on with the server people, and after three weeks they finally reconfigured, and now it is fine. Thank you!
Posted by: Linde at November 17, 2007 2:56 AMi am running a shared wireless network,host pc running xp with laptop running vista can receive emails on laptop cannot send emails via laptop
Posted by: anthony stone at June 28, 2008 10:33 AMkeep getting error message 0x800ccc0d are they incompatible
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PLEASE read the article. You probably simply have your mail
program on your laptop misconfigured.
Leo
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Posted by: Leo at June 29, 2008 4:44 PMwd17WK2dSG2GdqLZ+gdbfgI=
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I have worked with Outlook Express alot, and also with the newer version called windows mail on the Vista Operation system. I have found that when you use certain kinds of virus scan programs such as (Norton) that the program likes to change settings for you wether you want it to or not. When this happens, disable the program and if that fixes it, then you have found the problem. Now you might want to disable the spam filter or other part of that program that is the problem. In my experience with it, usually if I have the virus scan set up to ONLY scan for virus's, then it will be ok.
Posted by: Laurie at July 14, 2008 10:10 AMI have spent at least three hours with Comcast tech people. I no longer can get Comcast to connect with my Outlook Express 6. My problem is with my wifes computer which is Intel (R) Pentium (R) 4 CPU 2.66 GHZ, process ore speed 2.60 Ghz, Ram 512 MB, Windows XP Home, opeerating system version5.1.2600 which is automatical set to download Microsoft info. HOWEVER - this computer has been used in a little bit different ways as far as Outlook Express. At one time it contain over 3000 emails in the inbound box and pbly should not even worked. All of a sudden it quit connecting. Comcast suggest I take a portion of the 3000 emails and put them in a new file, I did. Shortly after that the 1700 emails in the in box completely disappeared. Now there should be no reason that it should not connect with Comcast. Instead all the emails seem to be going into the Comcast Web mail. This email is very confusing and difficult for my wife to operate and wants to get Outlook Express going again. I have looked at a bunch of cure-all programs and they seem to confuse me more. Is there another email program much like OE that you would suggest converting to. You have helped me before and I do keep fwdg you new letter of many of my email friends. Hope they get started with you. Thanks again. Bud M
Posted by: Bud Madson at December 2, 2008 3:17 PMMost of the problems in outlook and outlook express are resolved by merely restarting the computer.
Posted by: Chintan Padhya at May 18, 2009 3:12 AMOutlook error 0x800ccc0d......this error generally occurs becuase the internet is not connected
Posted by: RUDY at May 30, 2009 6:23 PMOutlook Error 0x800ccc0d - My Norton 360 Premier Edition has blocked the access to the internet.
Posted by: Paulo Vorperian at June 20, 2009 12:07 PMHow to fix it:
-Open Norton
-Settings
-Firewall Protection
-Firewall Program Rules
-In Outlokk Access : set Custom
Then it will be ok
I also was getting Outlook Express error 0x800ccc0d which basically was telling me I had no internet connection. If I tried to use Internet Explorer I would get 'Page not Found' and if I clicked on the 'run diagnostics' option under 'Page not Found' I would get Error 12007. I could get rid of this conditon by resetting the computer, or by turning it off and then back on again. It would work for about 10 minutes, and then, the same problem would occur. The resolution was to run a 'Registry repair/Cure' program that I downloaded for agbout $12.00. This program found registry problems and was able to fix them. After that, my computer worked fine. I would say that 'Reg Cure' fixed my problem.
Posted by: Bill Divers at September 30, 2009 12:24 PMAfter a lot of internet searching, I ran Registry Mechanic (free) and that solved my problem. McAfee online support wasn't any help.
Posted by: Terry Richardson at October 26, 2009 1:34 PM