Error code
Windows ERROR_DUP_NAME
WINDOWSERROR_DUP_NAME
System Error Code· A POSIX/system errno returned when a system call fails.
What it means
You were not connected because a duplicate name exists on the network. If joining a domain, go to System in Control Panel to change the computer name and try again. If joining a workgroup, choose another workgroup name..
How to fix it
- Rename one of the conflicting computers in System Properties.
- ensure each machine has a unique computer name before joining.
- flush the NetBIOS name cache with 'nbtstat -R'.
- reboot after changing the name.
Not affiliated with Windows. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More Windows codes
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- ERROR_DEV_NOT_EXISTThe specified network resource or device is no longer available.