What does NTSTATUS 0xC000002F (STATUS_PORT_MESSAGE_TOO_LONG) mean?

 
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STATUS_INVALID_PORT_ATTRIBUTES STATUS_INVALID_PARAMETER_MIX

STATUS_PORT_MESSAGE_TOO_LONG

The message is larger than the port allows

Measure the complete native port message against the API and port limits before sending it. Split or redesign the message payload rather than adjusting TCP or socket buffer settings.

Native port messaging has a maximum message size. This status means the caller reached the port path, but the request or reply buffer was too large for the port contract.

What to inspect

  • Log the message length and maximum expected by the port.
  • Split large payloads or move bulk data out of the port message.
  • Check whether a wrong structure version made the message unexpectedly large.

References for STATUS_PORT_MESSAGE_TOO_LONG


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