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CI_E_SHARING_VIOLATION
A sharing or locking conflict blocks content-index access
CI_E_SHARING_VIOLATION is HRESULT 0x8004181B (-2147215333 signed; 2147751963 unsigned). Its severity bit is 1, facility is 4 (FACILITY_ITF for these values), and code field is 0x181B. Standard HRESULT severity rules classify the value as a failure. AllStat describes the value as “A sharing or locking violation caused a failure.”
Contract boundary
This result belongs to opening catalog, source or helper data with required sharing semantics. The decisive interpretation is that another owner currently holds an incompatible lock on the resource needed by the operation. Keep the symbolic constant and method stage together in logs; its hexadecimal value alone cannot identify the owning transition or input.
The legacy content-index helper layer has explicit object, catalog and service states. In the result investigation, a generic retry can hide lifecycle, ordering or policy defects. This context narrows the responsible component without replacing the code-specific checks below.
Ways this state occurs
- A writer replaces catalog support files; preserve the observation under the result correlation record.
- Backup software locks the directory; preserve the observation under the result correlation record.
- Two service instances use the same data path; preserve the observation under the result correlation record.
- A source document is exclusively open; preserve the observation under the result correlation record.
The useful hypothesis for it must explain both opening catalog, source or helper data with required sharing semantics and the documented condition. Compare the failing case with a control that preserves exact locked path or object and changes only requested share/access mode; this prevents unrelated environment differences from dominating the result test.
Telemetry fields
- The result investigation should record exact locked path or object.
- The result investigation should record requested share/access mode.
- The result investigation should record owning process when observable.
- The result investigation should record lock duration and recurrence.
Capture exact locked path or object before releasing objects, closing handles or reconnecting. Retain the raw HRESULT with requested share/access mode, component version, UTC timestamp and correlation ID. Bound the result telemetry to diagnostic metadata because document content, credentials and unrestricted query text may be sensitive.
Verification sequence
- Identify whether the locked object is catalog data or source content. Associate this observation specifically with this result.
- Check for duplicate service instances.
- Wait for known atomic writers to finish.
- Do not copy or delete live catalog files to bypass locks. Associate this observation specifically with it.
Change one variable per it control run. Preserve the component version and target identity, then alter only the condition described as another owner currently holds an incompatible lock on the resource needed by the operation. This isolates whether it is causal rather than merely repeatable.
Safe continuation
Retry with bounded backoff after the lock owner releases the resource; persistent conflicts require ownership correction. Record whether opening catalog, source or helper data with required sharing semantics produced any content, update or state transition before returning. If completion remains unknown, the path must not replay non-idempotent work until the owner confirms final state.
The retry gate for it should be a concrete change in exact locked path or object or requested share/access mode. A timer alone cannot demonstrate that the result contract condition has changed.
Limits of the HRESULT
It does not imply logon failure or filesystem capacity exhaustion. Without the call boundary for opening catalog, source or helper data with required sharing semantics, it also cannot identify which wrapper or configuration layer introduced the condition.
Distinguishing related codes
FILTER_E_IN_USE is document-filter specific; it can arise in broader helper/index operations. In it telemetry, preserve neighboring constants separately because the same visible symptom may require a different caller action, owner or recovery gate.
Developer and administrator actions
- At step 1 for it, at the code boundary, keep exact locked path or object beside the returned HRESULT
- At step 2 for it, in telemetry, correlate requested share/access mode with the target and component generation
- At step 3 for it, for regression coverage, force the documented condition: another owner currently holds an incompatible lock on the resource needed by the operation
- At step 4 for it, for operations staff, expose the corrective state change rather than a generic retry button
- At step 5 for it, after remediation, validate one known-good control and the original failing case
Practical case
A backup agent opens catalog metadata without compatible sharing. Scheduling backup around the index service removes recurrent failures. In this scenario, handling it at its real contract boundary prevents the application from collapsing a precise state into an unhelpful generic “search failed” message.
Official Microsoft references
- Microsoft: content-indexing helper-function values — official contract information relevant to it.
- Microsoft: Content-Indexing values
- Microsoft: HRESULT values
- Microsoft: Windows Search SQL syntax
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