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FDAEMON_E_WORDLISTCOMMITFAILED
The word list could not be committed for querying
FDAEMON_E_WORDLISTCOMMITFAILED is HRESULT 0x80041686. Windows documents it as “Commit of wordlist failed. Data not available for query.”
Interpretation
This result belongs to legacy Windows content indexing and is returned while publishing newly extracted terms from an indexing batch into query-visible catalog structures. The exact condition is: storage, transaction, merge or catalog-generation failure prevents the word list from becoming available to queries.
This value belongs to the legacy filter daemon and content-indexing pipeline. It identifies failure while extracting or committing indexed content, so query syntax changes do not repair it. Preserve the document, filter handler and catalog generation that owned the work item. Current IFilter documentation clarifies handler extraction contracts, while the daemon HRESULT remains tied to the legacy content-indexing pipeline and its catalog generation.
Concrete sources
An unindexed document is only the outcome; it does not identify the handler, resource, partition generation, change list or word-list stage that failed.
Observability checklist
- Compare failing and known-good values for word-list batch ID under the same provider or handler version.
- Record the source and normalization path of commit phase, not only its display form.
- Record free space and I/O status before releasing the relevant objects.
- Associate query-visible generation with the exact UTC timestamp and correlation identifier.
- Compare failing and known-good values for document identity and type under the same provider or handler version.
Hash document content while retaining file type, size, handler CLSID, extraction stage, block counts and catalog generation.
Investigation order
- Capture word-list batch ID and commit phase at the call boundary that returns this result.
- Confirm the operation reached publishing newly extracted terms from an indexing batch into query-visible catalog structures with the intended partition generation.
- record batch identity, target partition, commit phase, storage status and whether prior query-visible data remains valid.
Run a copied document through the same filter version in an isolated queue and compare the exact extraction or commit stage with a known-good document type.
Corrective action
Restore catalog storage consistency and replay the affected batch; do not report the new content as searchable before commit succeeds. Retry only after resource pressure, handler behavior, work generation or catalog storage state changes and stale work is discarded.
What must not be inferred
It does not prove that all documents or all filters are affected; preserve the triggering work item, handler and catalog generation before broad recovery.
Neighboring status codes
FDAEMON_E_NOWORDLIST means no word list is being built, while this value says a commit was attempted and failed.
Developer and administrator guidance
Retain the document identity, filter CLSID/version/bitness, daemon event, catalog generation and retry or quarantine history. Before rebuilding catalogs or reregistering every filter, isolate the document, handler and failed work generation.
Reproduction example
A disk error interrupts word-list publication. Monitoring keeps the previous generation online, repairs storage and replays only the failed indexing batch.
Official Microsoft references
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