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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. The documented description is “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.
The metadata object has not reached, or has already passed, the state in which the operation is legal.
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.
Typical causes and interpretation
Common cause categories are: layout is requested too early; mutation occurs after layout; a referenced type is uncompiled; calls are made in the wrong order.
Evidence to preserve
- Record the HRESULT 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 the failing operation.
- When the failure occurs during type-library generation, record construction order, imported libraries, layout/finalization state, and output TLB hash.
- After the failing call, release TYPEATTR, FUNCDESC, VARDESC, BSTR, and interface resources using the matching API even when parsing or lookup fails.
Logs should expose enough structure to reproduce the failure without becoming a secondary store of sensitive input data.
Diagnostic sequence
- Capture the HRESULT (0x80028029) before a compiler, importer, or language runtime reduces the value to a generic metadata error.
- Verify the exact type-library identity, file/resource loaded, registry view, architecture, and operation that returned the HRESULT.
- Prove the relevant metadata condition: the metadata object has not reached, or has already passed, the state in which the operation is legal.
- Test the likely causes independently: layout is requested too early; mutation occurs after layout; a referenced type is uncompiled; calls are made in the wrong order.
- For
TYPE_E_INVALIDSTATE, 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 the HRESULT no longer occurs 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.
Practical scenario
A generator calls LayOut before defining all referenced records; reordering construction produces valid metadata.
Difference from related HRESULTs
TYPE_E_BADMODULEKIND concerns a module category mismatch; it concerns the lifecycle phase of the metadata object.
Developer and administrator guidance
Tools handling this HRESULT should pin type-library identity and version, avoid caching raw indices across versions, and preserve stable GUIDs and DISPIDs for published contracts. Repair for TYPE_E_INVALIDSTATE 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 TYPE_E_INVALIDSTATE, copying a TLB from another machine can silence lookup while creating a more dangerous ABI mismatch.
References
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