NTSTATUS 0xC00000CD (STATUS_TOO_MANY_NAMES): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The local NetBIOS adapter name table is full and cannot register another unique or group service name.

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STATUS_BAD_NETWORK_NAME	STATUS_TOO_MANY_SESSIONS

STATUS_TOO_MANY_NAMES

The local legacy adapter cannot register another network name

NetBIOS adapters maintain a finite table of registered unique and group names. This status means the local adapter reached that naming limit, often because software registered many aliases, stale names were not released, or a legacy implementation uses a small fixed table.

Determine which names are active before deleting entries. The 16th NetBIOS byte identifies the service suffix, so visually identical base names can represent different services. Modern DNS aliases do not consume the same table and may be a better design for new deployments.

What to inspect

Enumerate registered NetBIOS names and their suffixes.
Find services repeatedly registering aliases without cleanup.
Remove obsolete aliases or migrate discovery to supported DNS and SMB mechanisms.

References

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