What does HRESULT 0x000401C0 (CONVERT10_S_NO_PRESENTATION) mean?

CONVERT10_S_NO_PRESENTATION

OLE 1 stream converted without presentation data

CONVERT10_S_NO_PRESENTATION is HRESULT 262592 (0x000401C0) from winerror.h. The documented description is “Unable to convert OLESTREAM to IStorage.” The high-order severity bit is clear, so this is a success result, but it carries more information than plain S_OK.

The OLESTREAM-to-IStorage conversion completed but the source did not provide presentation data that could be converted into the destination storage.

Evidence to preserve

• Preserve source OLESTREAM size and hash.
• Preserve destination CLSID and storage streams.
• Preserve converter callback activity.
• Preserve presence of native data versus presentation data.
• Preserve rendering behavior with the original server unavailable.

Where the result is encountered

• This result can appear in OleConvertOLESTREAMToIStorage migrations; record the producing interface and method.
• This result can appear in opening OLE 1 compound content in an OLE 2 container; record the producing interface and method.
• It can appear in archival conversion of embedded objects; record the producing interface and method.

State to verify

The central question is whether the native object data and class information were preserved even though a cached visual presentation is absent.

Diagnostic sequence

• Capture the raw HRESULT 0x000401C0 immediately after the returning method and record whether the caller used SUCCEEDED, FAILED, equality testing, or exception translation.
• Verify the method-specific state: the native object data and class information were preserved even though a cached visual presentation is absent.

Difference from nearby HRESULT values

OLE_S_STATIC reports a usable static presentation; it reports that conversion produced no presentation cache.

Correct handling, retry, and recovery

Keep the converted storage if native data is valid, then regenerate a presentation by running the object server when possible. Clearly mark documents that cannot render offline.

Practical validation scenario

A migration tool converts a legacy spreadsheet object whose native stream is intact but preview metafile is missing. It saves the storage, opens the server to rebuild the preview, and verifies offline display afterward.

Developer and administrator guidance

References

• Microsoft: COM conversion status codes
• Microsoft: OLE conversion functions
• Microsoft: HRESULT values