Cant connect to server 2003 with LAN ip.

Microsoft Windows 7 ultimate 32-bit
February 3, 2010 at 17:18:37
Specs: Windows 7
Here's the thing.

I own a small business with 10 computer running windows xp and a server running microsoft 2003. I just upgraded one of the computers and it has Windows 7 ultimate on it. When I try to connect to the server using the LAN ip address I get the following error message: This computer can't connect to the remote computer. Try connecting again. If the problem continues, contact the owner of the remote computer or your network administrator.

Thing is, I am the owner of the remote computer and the network administrator!

Now here comes the really weird part. I setup a free dns account (*** for my network. If I type in the WAN address (*** the computer will connect to the server. Keep in mind, the computer is connected to the local network.

All of the other Xp computers connect flawlessly. I even have a laptop that i brought in that has windows 7 and it connects to the server using the LAN ip address.

I have searched and searched for answers and still no answer.


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February 3, 2010 at 17:48:07
If you can connect to the server through dyndns that means that so can anyone else from outside your LAN. Is that what you really want? You only need a dyndns account if you want outside access to your network.

Have you checked the LAN IP address that the new computer is using?

Is it manually configured or a DHCP address?


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February 3, 2010 at 17:54:37
I had the dyndns setup before because I do access the server from outside the LAN. I setup a VPN on my server and usually use that because it is secure but just to test a few things I also opened up 3389 so that I could see if using the WAN address would allow it to connect, and of course it worked. I have the ip address of the new computer and the server.

The server ip address is manually config and the new computer is automatic.

I have a router that assigns all the ip address' to the computers.

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