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Internet Connection Sharing Generates Error Message When IP Address Is Already in Use

This article was previously published under Q241769
This article has been archived. It is offered "as is" and will no longer be updated.
When you try to enable Internet Connection Sharing (ICS) on your Windows 2000-based computer on a network, you may receive the following error message:
Cannot enable shared access.

Error 783: Internet Connection Sharing cannot be enabled. The LAN connection selected as the private network is either not present, or is disconnected from the network. Please ensure that the LAN adapter is connected before enabling Internet Connection Sharing.
This problem can occur if the Internet Protocol (IP) address is already in use on another computer on your network. When you enable ICS, your computer is assigned the IP address, and if this address is already in use on another computer, the error message listed earlier in this article is generated.
To work around this problem, disconnect the computer using the IP address from the network, or change its IP address to something other than
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Article ID: 241769 - Last Review: 12/05/2015 15:55:54 - Revision: 3.2

Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Professional Edition, Microsoft Windows 2000 Datacenter Server

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