Windows error 1830 (RPC_X_INVALID_PIPE

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: An RPC pipe descriptor is invalid or its callback state has been corrupted.

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RPC_X_WRONG_STUB_VERSION	RPC_X_WRONG_PIPE_ORDER

RPC_X_INVALID_PIPE_OBJECT

What an RPC pipe object is

An MIDL pipe is a streamed RPC parameter, not a Windows named pipe and not a socket. The client and server stubs use a pipe descriptor containing callback routines and state. Depending on the parameter direction, the runtime calls a pull routine to obtain the next input chunk, a push routine to deliver an output chunk, or an alloc routine to obtain a buffer for received elements.

RPC_X_INVALID_PIPE_OBJECT therefore points at that descriptor or at the generated stub's view of it. It is not evidence that the RPC endpoint mapper failed, that a TCP connection was refused, or that an ordinary named pipe was malformed.

What usually makes the descriptor invalid

The application passed a partially initialized pipe structure: a callback required for the parameter direction is absent, or its state field does not describe the current call.
The descriptor or its state storage was released, overwritten, or reused while the synchronous RPC call was still processing pipe callbacks.
The client code was built against stale MIDL-generated declarations, so the application fills a different pipe structure than the proxy or stub expects.
A callback violates its contract by returning a buffer or element count that does not match the object and state supplied by the generated code.

Useful checks

Start from the IDL signature and identify every pipe parameter, its [in], [out], or [in, out] direction, and which side owns each callback. Keep the pipe descriptor and its state alive for the entire RPC invocation; do not place a pointer to short-lived stack storage into a callback context that may be reached later in the call.

When this appears intermittently, record the interface UUID, operation number, parameter direction, callback entry and exit, requested element capacity, returned element count, and the address or identity of the state object. Memory diagnostics are more useful here than generic network retries, because the failure is normally in the local pipe contract before application data is fully transferred.

References

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