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ERROR_BAD_REM_ADAP
The terminology comes from older network-provider and NetBIOS environments. NetBIOS defines node and session behavior independently of modern SMB dialect negotiation, so this value should not automatically be interpreted as an Ethernet NIC mismatch.
First identify the component that still emits the code. If a legacy provider or NetBIOS-over-TCP path is active, compare its node/session expectations and the remote implementation. If a modern SMB application receives the value only after a compatibility layer translates another status, preserve that lower-level status; it is likely more actionable than the historical Win32 wording.
Compatibility evidence
- Identify the network provider and redirector involved.
- Determine whether NetBIOS-over-TCP or another legacy transport/provider is actually in the path.
- Compare client and server protocol capabilities before replacing hardware.
- Keep packet traces and provider-specific errors that show the failed negotiation stage.
RFC 1001 NetBIOS concepts and methods · RFC 1002 NetBIOS detailed specification · WNetGetNetworkInformation
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