Event Message:

A duplicate name has been detected on the TCP network. The IP address of the machine that sent the message is in the data. Use nbtstat -n in a command window to see which name is in the Conflict state.

Source

Event Log

Event ID

Event Type

Nbt

System

4319

Error

User Action:

Use the nbtstat -n at the command prompt to see which name is in the Conflict state.