WinTrouble

How to fix ERROR_BAD_NET_NAME (67)

Code:67 (0x43)
Teracopy: Reports error

Description

The network name cannot be found. This error occurs during a file transfer when Windows is unable to resolve or reach a UNC network path (e.g. \\server\share\folder). TeraCopy encounters this when the source or destination is a network share that is unreachable, misconfigured, or no longer exists.

Causes

  • Invalid or mistyped UNC path — the server name or share name in the path does not exist or has been renamed.
  • Network share has been removed — the shared folder on the remote machine is no longer shared or has been deleted.
  • Domain controller is unresponsive — if the machine hosting the share is a domain controller with misconfigured network components, it may stop responding, making its shares unreachable.
  • Outdated or incompatible network adapter drivers — faulty drivers on the server can prevent it from properly advertising or serving network shares.
  • Misconfigured IP Network Address Translator (NAT) — an incorrectly configured NAT driver can interfere with network name resolution and UNC path access.
  • Distributed File System (DFS) service not running — if the path routes through DFS, a stopped DFS service will cause the network name to be unresolvable.

Solutions

  1. Verify the UNC path — Open File Explorer and try navigating to the path manually to confirm it is accessible.

  2. Check that the share exists — on the remote machine, confirm the folder is still shared and that sharing has not been disabled or the folder renamed.

  3. Update network adapter drivers — on the machine hosting the share (particularly domain controllers running Windows Server), install the latest network adapter drivers compatible with the operating system.

  4. Disable a misconfigured IP NAT driver — if Network Address Translation is installed but not configured correctly, disable it:

    • Open Device Manager (right-click My Computer → Properties → Hardware → Device Manager).
    • From the View menu, select Show hidden devices.
    • Expand Non-Plug and Play Drivers.
    • Right-click IP Network Address Translator and select Disable.
    • Restart the computer when prompted.

  5. Restart the Distributed File System service — if the share is accessed via DFS, restart the service on the domain controller:

    • Open Services (services.msc).
    • Locate Distributed File System, right-click it, and select Restart.
    • Retry the file transfer.