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TYPE_E_INVALIDSTATE
Type builder is in an invalid state for the requested operation
TYPE_E_INVALIDSTATE is HRESULT 2147647529 (0x80028029) from winerror.h. AllStat describes it as “Invalid forward reference, or reference to uncompiled type.” The value must be interpreted at ICreateTypeInfo or type-library compilation with forward references and staged layout, because the same high-level symptom can come from a different contract boundary and require different cleanup.
The decisive Interpretation is that the metadata object has not reached, or has already passed, the state in which the operation is legal. For reliable triage of this result, store the native HRESULT and symbolic identity before generic error handling rewrites either one.
Where the result appears
- This result belongs to type-library and metadata processing around ICreateTypeInfo or type-library compilation with forward references and staged layout.
- identify the LIBID, major/minor version, LCID, SYSKIND, file path, resource ID, and the specific ITypeLib or ITypeInfo operation.
- Metadata consumers should treat this result as a contract-version or construction problem until file integrity, registry view, import dependencies, TYPEKIND, and builder phase are verified.
The root-cause boundary for this HRESULT is the component that returned it, not the application screen on which the result was eventually displayed.
Typical causes and interpretation boundary
Common cause categories for this HRESULT are: layout is requested too early; mutation occurs after layout; a referenced type is uncompiled; calls are made in the wrong order. Investigate this result through falsifiable cause hypotheses and keep the first lower-level failure that explains the observed HRESULT.
The check that separates it from nearby HRESULTs is: the metadata object has not reached, or has already passed, the state in which the operation is legal. Use the decisive condition for this HRESULT as a test assertion; if it cannot be asserted, diagnosis is not complete.
Evidence and telemetry
- Record it with the type-library path and hash, LIBID and version, LCID, architecture, source package, and producer toolchain.
- capture builder phase; prior SetTypeFlags or LayOut calls; forward declarations; referenced types; save state; operation sequence.
- Retain the exact type, member, field, name, MEMBERID, HREFTYPE, TYPEKIND, or registry path involved in it.
- When it is produced during generation, record construction order, imported libraries, layout/finalization state, and output TLB hash.
- After it, release TYPEATTR, FUNCDESC, VARDESC, BSTR, and interface resources using the matching API even when parsing or lookup fails.
Logs for this HRESULT should expose enough structure to reproduce the failure without becoming a secondary store of sensitive input data.
Diagnostic sequence
- Capture it (0x80028029) before a compiler, importer, or language runtime reduces it to a generic metadata error.
- Verify the exact type-library identity, file/resource loaded, registry view, architecture, and operation that returned it.
- Prove the decisive metadata condition for this HRESULT: the metadata object has not reached, or has already passed, the state in which the operation is legal.
- Test the likely causes independently for this HRESULT: layout is requested too early; mutation occurs after layout; a referenced type is uncompiled; calls are made in the wrong order.
- For <code>it</code>, enumerate the relevant TYPEATTR, members, imports, names, IDs, locales, and builder state instead of assuming source declarations match deployed metadata.
- Rebuild or reload one corrected metadata generation and verify that it disappears without introducing a different identity or compatibility break.
Correct handling and recovery
The appropriate recovery is to follow the documented construction sequence, complete dependencies before layout, and create a new builder generation after finalization. Do not loop on it; retry only under a documented transient condition with bounded delay and post-operation reconciliation.
After observing it, separate local resource cleanup from server-side reconciliation and perform each only for the failing activity ID.
Practical scenario
A generator calls LayOut before defining all referenced records; reordering construction produces valid metadata.
The acceptance test for this HRESULT should prove that the proposed repair changes the predicted contract fact rather than merely hiding the message.
Difference from related HRESULTs
TYPE_E_BADMODULEKIND concerns a module category mismatch; it concerns the lifecycle phase of the metadata object.
Preserve the neighboring-result distinction for this HRESULT in metrics and incident reports to avoid applying the wrong remediation.
Developer and administrator guidance
Tools handling it should pin type-library identity and version, avoid caching raw indices across versions, and preserve stable GUIDs and DISPIDs for published contracts. Repair for <code>it</code> should be performed by the metadata producer or installer, not by ad hoc registry edits in the consuming process.
Administrators should compare installed files and registration against the product manifest, repair the matching package, and keep 32-bit and 64-bit registry views explicit. For <code>it</code>, copying a TLB from another machine can silence lookup while creating a more dangerous ABI mismatch.
References
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