What does Windows error code 4001 (ERROR_CAN_NOT_DEL_LOCAL_WINS) mean?

ERROR_CAN_NOT_DEL_LOCAL_WINS

The local WINS cannot be deleted.

ERROR_CAN_NOT_DEL_LOCAL_WINS is Win32 error 4001 (0xFA1) and belongs to WINS server configuration.

Where the result appears

• Removing a WINS server from a replication or management list.
• Editing the local server entry through WINS administration.
• Decommissioning a WINS role.
• Automation that treats every listed WINS server as removable.

Likely causes

• the requested entry represents the WINS server currently performing the operation.
• the tool attempted to delete the mandatory local identity rather than a remote partner.
• decommissioning steps were run in the wrong order.
• a stale management view misidentified the local server as an ordinary list member.

Troubleshooting steps

• Record target server name and IP address.
• Record local WINS service identity.
• Record replication partner configuration.
• Record whether the role is being migrated or simply edited.
• Record management protocol request that selected the entry.

What to verify

Verify whether the requested entry represents the WINS server currently performing the operation. Check target server name and IP address together with local WINS service identity.

Handling, retry, and recovery

Do not force-delete the local WINS identity from its own configuration. Remove or reconfigure partners, migrate clients, and uninstall or decommission the role through the supported sequence.

Difference from nearby codes

The code is not a general permission failure; it protects the special local WINS entry from an invalid delete operation.

Practical example

A cleanup script loops over all WINS entries, including the current server.

References

• Microsoft: System Error Codes (4000–5999) — reference for error 4001.
• Microsoft: Windows Internet Name Service (WINS) — reference for error 4001.
• Microsoft: WINS Management Protocol — reference for error 4001.