What does HRESULT 0x800401C1 (CONVERT10_E_OLESTREAM_PUT) mean?

Status / error code:

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Constant name:

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Facility:

Operating System:

Description:

The OLESTREAM Put callback failed while writing converted OLE 1 data.

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CONVERT10_E_OLESTREAM_GET	CONVERT10_E_OLESTREAM_FMT

CONVERT10_E_OLESTREAM_PUT

OLESTREAM Put method failed

CONVERT10_E_OLESTREAM_PUT has hexadecimal value 0x800401C1 (unsigned 2147746241, signed -2147221055). AllStat records “OLESTREAM Put method failed”. The narrow interpretation is that The OLESTREAM Put callback failed while writing converted OLE 1 data. The failing stage is converting OLE 2 structured storage into an OLE 1 stream.

The high bit in 0x800401C1 is set, so this is a failure rather than a success or informational result. Its facility field is 4 (FACILITY_ITF) and its low 16-bit code is 449 (0x01C1). Those bit fields classify the value, but they do not identify the failing object by themselves; the native method, object identity, and first producer of this result remain essential.

API stage

Understanding this result requires this subsystem context: OLE 1/OLE 2 conversion combines callback I/O, binary parsing, structured storage, and presentation conversion. Retaining the stage and byte offset is essential because a read failure, format failure, missing stream, and GDI failure require different repairs.

Associate this result with one exact operation in OleConvertOLESTREAMToIStorage, OleConvertIStorageToOLESTREAM, OLESTREAM callbacks, structured-storage streams, and presentation-data conversion.
Confirm that this result came from converting OLE 2 structured storage into an OLE 1 stream, rather than from cleanup or a wrapper that ran afterward.
Preserve any IErrorInfo, underlying Win32 result, provider message, or callback failure that preceded it; the HRESULT alone should not erase a more specific cause.

Verification steps

Capture it at the first native return before a wrapper maps it to a generic exception.
Identify the exact object, method, and lifecycle phase involved in converting OLE 2 structured storage into an OLE 1 stream.
Capture requested/written byte counts, offset, and underlying write error.
Track whether the destination supports rollback or atomic replacement.
Verify callback lifetime and synchronization.
Reproduce it with one controlled input or state change, and verify that the correction changes the decisive evidence rather than merely hiding the result.

Interpretation limits

It can result when the destination is full, closed, or read-only.
It can result when the callback reports a short write or loses its context.
It can result when a network or custom stream rejects data after partial output.

Incident record

A useful incident records the conversion direction, OLESTREAM Get or Put callback result, requested byte count, actual byte count, storage class, stream names, presentation format, bitmap or DIB metadata, and commit state. Also retain the application and component build, architecture, process and thread IDs, COM apartment, operation correlation ID, elapsed time, and the first state-changing event before the failure. When logging it, redact content and credentials while preserving types, lengths, hashes, opaque identities, and lifecycle generations needed to reproduce its contract.

verify callback lifetime and synchronization.

Recovery conditions

Correction. for it, write to a new temporary destination, fix the sink, and publish the output only after complete conversion. Retry boundary. Retry from the beginning after cleaning partial output; appending to a truncated stream is unsafe. Before repeating the operation, record stream positions and byte counts, release temporary GDI objects, and discard or roll back any output storage that was only partly written.

Practical scenario

A converter writes directly over an existing file and runs out of disk space; using a temporary file preserves the original and permits a clean retry. This isolates it within OLE 1/OLE 2 storage conversion and provides a regression test for the stated correction.

Difference from related HRESULTs

CONVERT10_E_OLESTREAM_GET concerns reading OLE 1 input; it concerns emitting OLE 1 output. Keep those outcomes separate in exception mappings, telemetry dimensions, user messages, and automated retry policy.

Developer and administrator guidance

Make OLESTREAM callbacks report exact byte counts, validate format headers before allocating, preserve structured-storage commit boundaries, and separate bitmap from DIB ownership. Regression coverage for it should include short reads and writes, invalid format records, absent standard streams, truncated presentation data, large dimensions, callback errors, and failure before versus after storage commit.

Operational repair for it must target the evidence-backed owner: preserve the original document and reproduce with a copy; repair the producing application or converter only after the failing conversion stage and file provenance are identified. Retain before-and-after traces for it so the change can be attributed and reversed.

References

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