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STATUS_PIPE_BUSY
The pipe is busy with outstanding operations
Enumerate existing instances of the named pipe and whether each has a connected client. A busy pipe is different from a missing pipe: the server exists but no suitable instance is currently available.
This is a state and scheduling condition. The pipe may be configured for operations that complete later, while current I/O is still queued on the handle or instance.
What to inspect
- Check for pending overlapped reads or writes.
- Inspect wait mode and completion routine behavior.
- Avoid closing or reusing the instance until queued I/O is drained.
References for STATUS_PIPE_BUSY
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