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What Are the Common Causes of Socket Error 11001?

Alex Newth
Alex Newth

When a user tries to synchronize his or her computer with another computer or server, a socket is sent out to connect with the other machine. Socket errors happen when something prevents the socket from connecting or being sent out. Socket error 11001 happens when the server to which the user’s computer is attempting to connect does not exist. While the firewall may be responsible for many other socket errors, this is rare for error 11001. Instead, it often happens because the user inputted the incorrect host name or the domain name server (DNS) is set improperly to connect to a source that is not real.

Firewalls and antivirus programs are sometimes the reason for socket errors. Firewalls restricting inside and outside access to the computer can keep a socket from functioning correctly. Socket error 11001 is caused from a host or server being named incorrectly, so the firewall is rarely the reason behind this error. At the same time, shutting off the firewall may make the 11001 error disappear.

Socket error 11001 may occur if DNS and the host connection is altered by the router.
Socket error 11001 may occur if DNS and the host connection is altered by the router.

The major reason for this error is that the host or server is not named correctly. For example, if the user attempts to connect with host A but enters the name as host AB, the 11001 error will occur. The host name entered may be real for another computer, but the host name must be relevant for the user’s database.

Most commonly, socket error 11001 is fixed by typing in the real host’s name. The user going into the configuration settings and typing the host’s name normally corrects this issue. This requires the user to know the real host’s name. Sometimes a host name can be changed if the computer recently encountered any electrical or software problems.

If the host is down, it can also trigger socket error 11001. Other errors are more commonly triggered if the host is down, but this is still a viable trigger. In this instance, the user should ping the host or server to see if it is active, but only after ensuring that the host name is correct in the program.

The problem can also occur as a result of the router or modem skewing or changing the domain name system (DNS) and host connection and leading to the socket error 11001. If this is occurring, the user should call the Internet provider and get the provider's assistance with changing the router or modem settings. If an advanced operator is using the computer, he or she may be able to do this without the provider.

Discussion Comments


I agree with Realited, either way whether you're connecting to your wireless router from the garage or you're connected in your home office the signal and medium might change, but the protocol and codes for not being able to connect to another router somewhere else in the world is the same. And the error code is also the same, the only thing that is different is the way you connect to that router. It's not the computer that is connecting to another router, its the router, and whatever message it gets what it fails to obtain a connection is just shunted back to your machine tethered to the network or not.


@Contentum I think this is something that would effect both land lines or wireless connections, as even the wireless has to go through a router, and that router can become compromised just like any other. Of course there are exceptions but off hand I cannot think of what they are at this moment.


I have to wonder just how often this error occurs these days. With the advent and proliferation of 4G technology, are these kinds of issues even still relevant? Or is this strictly something that affects land-line connections?

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    • Socket error 11001 may occur if DNS and the host connection is altered by the router.
      By: vladimirs
      Socket error 11001 may occur if DNS and the host connection is altered by the router.