What does NTSTATUS 0xC0220023 (STATUS_FWP_NULL_DISPLAY_NAME) mean?

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Description:

A WFP object is missing the required human-readable displayData.name field.

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STATUS_FWP_ZERO_LENGTH_ARRAY	STATUS_FWP_INVALID_ACTION_TYPE

STATUS_FWP_NULL_DISPLAY_NAME

The object can have a GUID but still fail its required display annotation

STATUS_FWP_NULL_DISPLAY_NAME occurs when the required displayData.name member is null for an object being added. The display name is not the object key: BFE can generate or store identifiers separately, but the management structure still requires this annotation for the relevant object class.

Correct the object construction code rather than synthesizing a changing name from an address or random value. Stable names improve policy inventory and support diagnosis, while the GUID or run-time ID remains the identifier that must be used for later lookup and cleanup.

What to inspect

The exact FWPM_DISPLAY_DATA0 member passed to the add call.
The string lifetime and termination at the call boundary.
The stable GUID or LUID used for identity, kept separate from the display name.
Whether localization or configuration generation can emit a null name for one policy path.

References

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