I've got an NT 4.0 server with service pack 4 on every 6th to 7th day receives a NetBT error. The message is; A duplicate name has been detected on the TCP network.<br><br>The File Server has been in a production mode for almost 2 years, yet the error messages began occuring 3 weeks ago<br><br>The File Server has 2 NICS, one internal and one external. The internal card has a private IP address assigned and cannot be seen on the internet.<br><br>Any ideas to help troubleshoot the error would be greatly appreciated.